The Mexico Open is down a top-25 player.

Daniel Berger, the 23^rd-ranked player in the Official World Golf Ranking, has withdrawn from this week’s inaugural tournament in Vallarta, Mexico.

Berger didn’t cite a reason, though he has dealt with a back injury for much of the year. He last played at the RBC Heritage two weeks ago and tied for 21^st. He’s only missed one cut since last year’s Masters.

Berger’s absence means there are just three top-25 players in the field: No. 2 Jon Rahm, No. 20 Abraham Ancer and No. 25 Tony Finau. Arjun Atwal was added to the field in Berger’s place. The 49-year-old Atwal has missed six of his past seven Tour cuts.

The Mexico Open was a PGA Tour Latinoamerica event last year before being elevated into an official Tour event.