The highest seeds largely held their floor on Day 5 in Cincinnati, with Jannik Sinner extending his hard-court win streak to 22 matches by keeping off Canadian No. 1 Gabriel Diallo in straight units.
Taylor Fritz saved his serve spotless to maneuver previous Lorenzo Sonego, whereas Frances Tiafoe and Holger Rune each superior with straight-set wins to arrange a rematch from final yr’s semi-final.
Benjamin Bonzi produced the day’s greatest scoreboard jolt, taking out Stefanos Tsitsipas in three units to proceed the Greek’s dismal summer time swing.
Adrian Mannarino’s upset of Tommy Paul additionally added to a combined day for the American contingent, although six U.S. males stay within the draw.
Right here’s how day 5 performed out.
Day 5 at a Look:
Longest Match: Mannarino d. Paul – 2h 43m
Quickest Win: Atmane d. Fonseca – 78m
Largest Upset: Bonzi d. Tsitsipas (25)
Individuals Remaining: 6 (Sinner’s half: Fritz, Tiafoe; Alcaraz’s half: Shelton, Brooksby, Opelka, Nakashima)
Seeds Out: Tsitsipas (25), Paul (13)
Match Factors Saved: Sinner – 1 (vs Diallo in 2nd set TB)
Day 5 Cincinnati Open 2025 Spherical of 32 Outcomes

Winner
Loser
Scoreline
Jannik Sinner (1)
Gabriel Diallo (30)
6-2 7-6(6)
Adrian Mannarino (Q)
Tommy Paul (13)
5-7 6-3 6-4
Felix Auger-Aliassime (23)
Arthur Rinderknech
7-6(4) 4-2 RET
Benjamin Bonzi
Stefanos Tsitsipas (25)
6-7(4) 6-3 6-4
Taylor Fritz (4)
Lorenzo Sonego (31)
7-6(4) 7-5
Terence Atmane (Q)
João Fonseca
6-3 6-4
Frances Tiafoe (10)
Ugo Humbert (20)
6-4 6-4
Holger Rune (7)
Alex Michelsen (28)
7-6(4) 6-3
Key Matches

Jannik Sinner def. Gabriel Diallo, 6-2, 7-6(6)
World No. 1 Jannik Sinner overcame a hearth alarm interruption to defeat Gabriel Diallo 6-2, 7-6(6).
The defending champion rallied from 0-2 within the first set to win six straight video games, then saved a set level within the second-set tiebreak with a scorching forehand return.
Sinner was placing his 21-match hard-court win streak and 45-0 document towards gamers exterior the High 20 on the road towards Diallo, and regardless of residence help and 10 aces, the Italian held agency to maneuver into spherical 4.
Diallo’s 10 double faults and 5/32 second-serve factors proved expensive as he Sinner
Sinner now faces qualifier Adrian Mannarino subsequent, who upset Tommy Paul. Can the Frenchman disrupt his sport along with his fashion of play?
Taylor Fritz def. Lorenzo Sonego, 7-6(4), 7-5
Taylor Fritz powered into the fourth spherical with a 7-6(4), 7-5 win over Lorenzo Sonego, shrugging off a 75-minute energy outage delay in a two-hour, eight-minute battle.
The fourth seed, unbeaten on serve in Cincinnati, confronted no break factors and clinched the decisive break at 5-5 within the second set to progress.
Fritz faces Terence Atmane subsequent, after the French qualifier took out João Fonseca in straight units.
Benjamin Bonzi def. Stefanos Tsitsipas, 6-7(4), 6-3, 6-4
Benjamin Bonzi upset eighth seed Stefanos Tsitsipas 6-7(4), 6-3, 6-4 to succeed in the Cincinnati Open fourth spherical, persevering with the Greek’s North American hard-court struggles with simply 4 wins throughout 2025’s hard-court Masters 1000s to this point.
Like Medvedev’s loss, it virtually looks like a misnomer to name this one an upset as Tsitsipas is in horrible kind and also you don’t really feel assured he’ll win towards anybody within the High 500.
Atmane subsequent faces Félix Auger-Aliassime, after he progressed when Rinderknech retired within the second set.
Highlights
Cincinnati Open 2025 Day 6 Spherical of 32 Matches

Ben Shelton (5) vs Roberto Bautista Agut
Jiri Lehecka (22) vs Adam Walton
Karen Khachanov (14) vs Jenson Brooksby (WC)
Brandon Nakashima (27) vs Alexander Zverev (3)
Reilly Opelka vs Francisco Comesana
Alexei Popyrin (21) vs Andrey Rublev (9)
Jakub Mensik (16) vs Luca Nardi (LL)
Hamad Medjedovic vs Carlos Alcaraz (2)