Fils vs Struff Prediction: BNP Paribas Fortis European Open 2026 Semifinal

A return advantage with a final place available

A 24% break rate in his hard-court record gives Arthur Fils the clearest advantage against Jan Lennard Struff. His advantage extends to holding serve, giving him more than one way to control the score. That matters against an opponent whose service record suggests breaks could be scarce. It doesn't settle the match.

The semifinal in Brussels puts a place in the BNP Paribas Fortis European Open final within reach for players with different histories at this tournament. Fils had played one previous main-draw campaign, while Struff had appeared in five. Neither had won the title. The immediate question is whether Fils can turn his stronger return record into enough chances to separate them, rather than let sets narrow to a few points.

Fils leads on both sides of serve

Over the past year on hard courts, Fils's service and return figures both exceeded Struff's, making his advantage relevant to both sides of the matchup. The samples covered 37 matches for Fils and 33 for Struff. Those are substantial stretches of play, although they do not describe identical opposition or conditions.

Fils held 86% of his service games, compared with 83% for Struff. Both protected serve well. The distinction is that Fils combined that protection with a better chance of making progress when receiving, rather than relying as heavily on his own service games.

Struff broke in 19% of return games, below the tour's hard-court average of 23%. That suggests the more difficult task belongs to him: holding often enough to stay close while finding opportunities against the stronger service record. Fils has the clearer route to a break; Struff has the serve to make him wait.

Struff can make the margins smaller

Struff's strongest route is to protect serve and force Fils to decide sets without a comfortable cushion. His Brussels results support that possibility: he beat Marcos Giron in consecutive tiebreaks and also needed a tiebreak against Zizou Bergs. Those results don't establish superiority in tight sets, but they show that his run here has already included the kind of scoring Struff needs.

The direct history is thin. Fils won their only previous meeting at the Paris Masters in 2024, so there is no repeated matchup pattern to confirm that his broader return advantage carries over against Struff. A single result cannot answer that question on its own.

Recent hard-court results also leave room for resistance: Fils won seven of his last 10, while Struff won six. If Struff keeps the semifinal close on serve, Fils's better return record may produce opportunities without producing an early separation.

The prediction

Court Shark's model favors Fils with a 72% win probability, while the market consensus has him at 81%. The direction is clear. The disagreement is about how strongly to favor him, not which player has the better chance of reaching the final.

Court Shark's AI analyst also picks Fils, agreeing with the model's choice. His advantage in both holding and breaking provides the tennis case for that selection, rather than requiring a forecast built around Struff's serve failing. The model's median match length is 22 games, with a straight-sets Fils win the likeliest individual result.

The middle half of forecast outcomes runs from 19 to 29 games, leaving room for a longer contest even with Fils favored. His edge is persuasive, not decisive before play. The key test is whether his return advantage creates breaks before Struff can take another set into a tiebreak.