Alex de Minaur lost to Arthur Fils at the Cincinnati Masters on Thursday, ending his bid for a top-four seed at the U.S. Open [1].

This result is significant because seeding determines the tournament bracket, often protecting top players from facing other elite opponents in the early rounds. By failing to secure a top-four spot, de Minaur faces a potentially more difficult path toward the championship.

De Minaur exited the tournament in the fourth round [2]. The defeat prevented the Australian from earning the ranking points necessary to climb further in the global standings before the final Grand Slam of the year [1].

Analysts said that a deeper run in the Cincinnati Masters could have moved de Minaur into the world top five [2]. Instead, the loss to Fils leaves him outside that elite bracket as he prepares for the upcoming tournament in New York.

The Cincinnati Masters serves as a critical warm-up event for the U.S. Open. For players like de Minaur, the points available in these high-level tournaments are essential for maintaining or improving their seed, which influences their psychological momentum, and physical workload during a major.

De Minaur now enters the U.S. Open without the advantage of a top-four seed [1]. While he remains a strong contender, the loss of this specific seeding status changes how he will be positioned against other top-ranked players in the draw.

Alex de Minaur lost to Arthur Fils at the Cincinnati Masters

The loss of a top-four seed means de Minaur is more likely to face a top-four ranked opponent earlier in the US Open tournament. This increases the risk of an early exit, as he no longer possesses the bracket protection afforded to the highest-ranked players in the world.