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# Acosta vs Basilashvili Prediction: Almaty Open 2026 Round of 16
- URL: https://courtshark.ai/blog/acosta-vs-basilashvili-almaty-open-2026-prediction/
- Published: 2026-10-21T00:45:21.000Z
- Updated: 2026-10-21T00:45:20.000Z
- Description: Basilashvili's hard-court results support favoritism in Almaty, but Diaz Acosta's rating and service record make a closer match plausible.
- Author: Court Shark Desk
- Tags: match-preview, Facundo Diaz Acosta, Nikoloz Basilashvili, Almaty Open 2026, Hard, ATP

In this analysis

1. [Key takeaway](#key-takeaway)
2. [Recent results support Basilashvili, but the margin divides opinion](#s-recent-results-support-basilashvili-but-the-margin-divides-o)
3. [Ratings and service records make a closer match plausible](#s-ratings-and-service-records-make-a-closer-match-plausible)
4. [Return opportunities and workload could alter the balance](#s-return-opportunities-and-workload-could-alter-the-balance)
5. [The prediction](#s-the-prediction)
6. [Explore this matchup](#explore)
7. [Methodology and sources](#methodology)

Key takeaway

Basilashvili's recent hard-court record supports favoritism, but the service gap is modest. Court Shark's model sees a much closer match than the market.

Nikoloz Basilashvili faces Facundo Diaz Acosta in the Almaty Open round of 16\. Court Shark's model gives Basilashvili a 53% chance, with recent hard-court results supporting his favoritism but less separating their service records.

## Recent results support Basilashvili, but the margin divides opinion

The market makes [Nikoloz Basilashvili](https://courtshark.ai/players/nikoloz-basilashvili-105932) a clear favorite over [Facundo Diaz Acosta](https://courtshark.ai/players/facundo-diaz-acosta-207680). Court Shark's model sees a much closer match. Basilashvili's recent hard-court record was 8-2, while Diaz Acosta's was 4-6\. That contrast supports favoring Basilashvili, although those results alone cannot establish how large his advantage should be against this particular opponent on Wednesday.

Their Almaty Open meeting offers a quarterfinal place and a test of whether recent surface form outweighs Diaz Acosta's stronger current ranking. Diaz Acosta entered at No. 69, while Basilashvili stood at No. 128\. Basilashvili had won three consecutive matches, including his latest victory over Marin Cilic; Diaz Acosta had ended a losing run by beating Thiago Agustin Tirante. Both arrived with a win, but Basilashvili's stronger sequence gives the market's broader preference a clear basis in results, without revealing why the price took its current position.

### Recent form

Article snapshot, Oct 20, 2026 · Not live

Each player's most recent completed matches, up to 10, oldest on the left.

__Recent results by player, oldest first__
| Player               | Date         | Result | Opponent                    | Score          | Event               |
| -------------------- | ------------ | ------ | --------------------------- | -------------- | ------------------- |
| Facundo Diaz Acosta  | Sep 7, 2026  | W      | Pol Martin Tiffon           | 6-3 2-6 6-2    | Seville CH          |
| Facundo Diaz Acosta  | Sep 9, 2026  | W      | Alejandro Moro Canas        | 6-1 7-5        | Seville CH          |
| Facundo Diaz Acosta  | Sep 11, 2026 | W      | Sebastian Ofner             | 7-5 6-2        | Seville CH          |
| Facundo Diaz Acosta  | Sep 12, 2026 | W      | Jaume Munar                 | 4-6 6-3 7-6(1) | Seville CH          |
| Facundo Diaz Acosta  | Sep 13, 2026 | W      | Dusan Lajovic               | 6-2 6-1        | Seville CH          |
| Facundo Diaz Acosta  | Sep 15, 2026 | L      | Daniel Glancy               |                | Szczecin Challenger |
| Facundo Diaz Acosta  | Sep 16, 2026 | L      | Daniel Elahi Galan          | 7-5 2-6 3-6    | Szczecin CH         |
| Facundo Diaz Acosta  | Oct 8, 2026  | L      | Nuno Borges                 | 6-7(5) 2-6     | Shanghai Masters    |
| Facundo Diaz Acosta  | Oct 13, 2026 | L      | Shintaro Mochizuki          | 2-6 6-7(6)     | Jinan Challenger    |
| Facundo Diaz Acosta  | Oct 19, 2026 | W      | Thiago Agustin Tirante      | 6-7(3) 6-1 6-4 | ATP Almaty          |
| Nikoloz Basilashvili | Sep 24, 2026 | W      | Miomir Kecmanovic           | 7-6(3) 6-4     | Chengdu             |
| Nikoloz Basilashvili | Sep 25, 2026 | W      | Botic Van De Zandschulp     | 6-4 7-5        | Chengdu             |
| Nikoloz Basilashvili | Sep 27, 2026 | W      | Jenson Brooksby             | 6-4 7-6(4)     | Chengdu             |
| Nikoloz Basilashvili | Sep 28, 2026 | L      | Alejandro Davidovich Fokina | 6-4 4-6 3-6    | Chengdu             |
| Nikoloz Basilashvili | Oct 5, 2026  | W      | Andre Ilagan                | 6-3 6-7(1) 7-5 | Shanghai Masters    |
| Nikoloz Basilashvili | Oct 6, 2026  | W      | Liam Draxl                  | 5-7 7-5 6-4    | Shanghai Masters    |
| Nikoloz Basilashvili | Oct 7, 2026  | L      | Adrian Mannarino            | 3-6 2-2 RET    | Shanghai Masters    |
| Nikoloz Basilashvili | Oct 17, 2026 | W      | Taro Daniel                 | 6-2 7-5        | ATP Almaty          |
| Nikoloz Basilashvili | Oct 18, 2026 | W      | Adam Walton                 | 6-4 7-6(4)     | ATP Almaty          |
| Nikoloz Basilashvili | Oct 19, 2026 | W      | Marin Cilic                 | 6-2 7-5        | ATP Almaty          |

Source: Court Shark model and match data.View data table

## Ratings and service records make a closer match plausible

The broader ratings offer a counterweight. Diaz Acosta's latest listed Elo rating was 1887, ahead of Basilashvili's 1816, despite the Georgian's better recent results on this surface. Those readings came from different dates in October, so they are not a simultaneous assessment immediately before this match. Still, the ordering supports caution about treating the recent win totals as a complete measure of their relative strength.

Their hard-court service records also suggest a narrower separation than the recent results might imply: Basilashvili held 84% of service games, compared with Diaz Acosta's 80%. Both figures covered the past year, but Diaz Acosta's sample contained nine matches against Basilashvili's 28\. The smaller sample makes the Argentine's record less established. Even so, his ability to keep service games is a concrete reason to expect resistance rather than assume the favorite will control the score.

### Two years of form

Article snapshot, Oct 20, 2026 · Not live

Each player's pre-match Elo rating since Oct 26, 2024\. Latest: Facundo Diaz Acosta 1887 (Oct 8, 2026), Nikoloz Basilashvili 1816 (Oct 18, 2026).

__Pre-match Elo rating over the last two years__
| Player               | Start of window     | Two-year peak       | Latest              |
| -------------------- | ------------------- | ------------------- | ------------------- |
| Facundo Diaz Acosta  | 1769 (Oct 26, 2024) | 1906 (Sep 16, 2026) | 1887 (Oct 8, 2026)  |
| Nikoloz Basilashvili | 1635 (Oct 30, 2024) | 1842 (May 12, 2026) | 1816 (Oct 18, 2026) |

Source: Court Shark model and match data.View data table

## Return opportunities and workload could alter the balance

The return gap was small. Basilashvili won 19% of return games on hard courts over the past year, while Diaz Acosta won 18%. Neither record suggests an overwhelming ability to break the other's serve, which makes a small number of return opportunities potentially important to the outcome. If Diaz Acosta protects his serve near his recent rate, Basilashvili may need to convert limited chances rather than rely on repeated breaks.

Workload offers another possible route away from the favorite, though it does not establish that either player is tired. Basilashvili had played five matches in the last two weeks, compared with three for Diaz Acosta, and both had played the previous day. There was also no previous meeting to establish a direct matchup pattern. A sustained serving advantage for Diaz Acosta would therefore be meaningful new evidence, while frequent early breaks for Basilashvili would support the market's more decisive reading.

## The prediction

Court Shark's model favors Basilashvili with a 53% win probability, while the market gives him 67%. The disagreement concerns degree, not direction. Recent hard-court results support the market's favorite; Diaz Acosta's higher rating and the smaller service gap support the model's more restrained forecast. Court Shark's AI analyst, which reads the matchup without the market, also picks Basilashvili, agreeing with the model on the winner.

### Model and market on Facundo Diaz Acosta

Article snapshot, Oct 20, 2026 · Not live

Facundo Diaz Acosta's chance as the market consensus priced it from the opening line, next to the Court Shark model.

__Facundo Diaz Acosta's chance to win__
| Reading           | Facundo Diaz Acosta | Nikoloz Basilashvili |
| ----------------- | ------------------- | -------------------- |
| Opening consensus | 31%                 | 69%                  |
| Latest consensus  | 33%                 | 67%                  |
| Court Shark model | 47%                 | 53%                  |

Source: Court Shark model and pre-match market consensus.View data table

## Explore this matchup

Compare both players side by side: recent results, surfaces, serve and return.

### Player comparison

Article snapshot, Oct 20, 2026 · Not live

Each measure on the same scale: recent wins, wins on this surface, head-to-head wins and the model's chance.

__Player comparison__
| Measure               | Facundo Diaz Acosta | Nikoloz Basilashvili |
| --------------------- | ------------------- | -------------------- |
| Wins, last 10 matches | 60% (6-4)           | 80% (8-2)            |
| Wins, last 10 on hard | 40% (4-6)           | 80% (8-2)            |
| Model win probability | 47%                 | 53%                  |

Source: Court Shark model and match data.View data table

### Win rate by surface

Article snapshot, Oct 20, 2026 · Not live

Share of matches won on each surface across each player's last 50 matches with full statistics.

__Win rate by surface__
| Surface | Facundo Diaz Acosta | Nikoloz Basilashvili |
| ------- | ------------------- | -------------------- |
| Hard    | Too few matches (3) | 57% (13-10)          |
| Clay    | 81% (38-9)          | 52% (12-11)          |
| Grass   | No matches          | Too few matches (4)  |

Source: Court Shark model and match data.View data table

### Model win probability

Article snapshot, Oct 20, 2026 · Not live

The Court Shark model's chance for each player to win this match.

__Model win probability by player__
| Player               | Win probability | Recent form (last 10) |
| -------------------- | --------------- | --------------------- |
| Facundo Diaz Acosta  | 47%             | 6-4                   |
| Nikoloz Basilashvili | 53%             | 8-2                   |

Source: Court Shark model and match data.View data table

### Ways to win

Article snapshot, Oct 20, 2026 · Not live

Every way the match can finish. The likeliest single result is Nikoloz Basilashvili in straight sets (32%).

__Chance of each final set score__
| Result                        | Chance |
| ----------------------------- | ------ |
| Facundo Diaz Acosta wins 2-0  | 28%    |
| Facundo Diaz Acosta wins 2-1  | 19%    |
| Nikoloz Basilashvili wins 2-1 | 21%    |
| Nikoloz Basilashvili wins 2-0 | 32%    |

Source: Court Shark model and match data.View data table

### How long it could go

Article snapshot, Oct 20, 2026 · Not live

A 60% chance the match lasts 19 to 30 games; 23 is the middle of the range.

__Chance of each total number of games in the match__
| Total games | Chance |
| ----------- | ------ |
| 13          | 0.2%   |
| 14          | 0.6%   |
| 15          | 1.8%   |
| 16          | 3.2%   |
| 17          | 5.9%   |
| 18          | 6.8%   |
| 19          | 8.2%   |
| 20          | 7.8%   |
| 21          | 5.3%   |
| 22          | 8.4%   |
| 23          | 6.6%   |
| 24          | 1.1%   |
| 25          | 3.4%   |
| 26          | 4.9%   |
| 27          | 2.9%   |
| 28          | 3.6%   |
| 29          | 3.9%   |
| 30          | 4.0%   |
| 31          | 4.7%   |
| 32          | 4.8%   |
| 33          | 3.0%   |
| 34          | 2.2%   |
| 35          | 3.1%   |
| 36          | 2.0%   |
| 37          | 0.3%   |
| 38          | 0.7%   |
| 39          | 0.7%   |

Source: Court Shark model and match data.View data table

### Return games won: where they stand

Article snapshot, Oct 20, 2026 · Not live

Each dot is one of the ATP top 100 with enough matches in the last 52 weeks. Facundo Diaz Acosta is 91st of 94; Nikoloz Basilashvili ranks ahead of 21 of 94.

__Return games won, last 52 weeks, against the ATP top 100__
| Player                             | Return games won | Place             |
| ---------------------------------- | ---------------- | ----------------- |
| Facundo Diaz Acosta                | 10.0%            | 91st of 94        |
| Nikoloz Basilashvili               | 16.3%            | Ahead of 21 of 94 |
| Field median                       | 18.8%            |                   |
| Field best (Daniel Merida Aguilar) | 30.7%            | 1st               |

Source: Court Shark model and match data.View data table

[Explore this matchup](https://courtshark.ai/h2h?p1=105932&p2=207680)

Court Shark win probabilities are statistical estimates, not advice. No outcome is guaranteed.

Our forecast

Court Shark's model

Nikoloz Basilashvili 53% to win

Match shape

Nikoloz Basilashvili in straight sets: 32%

Deciding set: 40%

Total games: median 23, middle half 19 to 30

AI analyst

Picks Nikoloz Basilashvili (agrees with the model)

Its case: Basilashvili has won 8 of his last 10 hard-court matches, including this week’s straight-set wins over Cilic, Walton and Daniel, while Diaz Acosta is 1-3 in his most recent four on hard courts; Basilashvili’s 7.9% hard-court ace rate also suits Almaty’s quick indoor conditions at 848m.

The risk it names: Diaz Acosta’s left-handed game and markedly stronger returning profile are the main threat, particularly after Basilashvili has already logged 262 minutes across 3 matches in the past 7 days.

Estimates recorded before play, not certainties.

Keep exploring

[Follow this match on Court Shark](https://courtshark.ai/matches?file=bdl%5F4719797)[Create a free account to keep it](https://courtshark.ai/register?redirect=%2Fmatches%3Ffile%3Dbdl%5F4719797)

Match context

Players

Facundo Diaz Acosta  
vs Nikoloz Basilashvili

Event

Almaty Open

Surface

Hard

Round

Round of 16

Date

Wednesday, October 21

Article snapshot · Not live

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Related on Court Shark

- [How our match model works](https://courtshark.ai/blog/methodology/)
- [Open the full head-to-head](https://courtshark.ai/h2h?p1=105932&p2=207680)
- [Our editorial standards](https://courtshark.ai/blog/editorial-standards/)
- [About the desk](https://courtshark.ai/blog/about-the-desk/)

## Methodology and sources

How we build model estimates and where our information comes from.

Model estimates and observed results

The win probabilities come from the Court Shark match model, trained on completed ATP and WTA matches. A probability says how often a player in this position wins, not that one result will happen. The model's number for a match is recorded before play and never changed afterwards, so it can be checked against the result.

Sources and citations

Results, scores, rankings and serve statistics come from the Court Shark match database. The market consensus is the pre-match price for each player converted to a probability. Figures in this article are a snapshot taken when it was written.

Limitations

Serve and return rates count only matches with full serve statistics, which are sparser for Challenger and lower-level events, and the tour average they are compared with covers every year on record. Head-to-head records count every meeting with a recorded winner, walkovers and retirements included. Charts and tables are a snapshot and do not update after publication.

About the desk

Who works on the Tennis Desk and how an article is put together. [Read about the desk](https://courtshark.ai/blog/about-the-desk/)

Editorial standards

What we publish, what we check and how we decide what is fit to print. [Read our standards](https://courtshark.ai/blog/editorial-standards/)

Corrections

Spotted an error? Write to hello@courtshark.ai and we will correct it and note the change. [Read the corrections policy](https://courtshark.ai/blog/editorial-standards/)