By Brian Wacker, PGATOUR.COM

PALM HARBOR, Fla. -- Trevor Immelman withdrew before the start of his round at the Transitions Championship, citing a wrist injury.

“Aggravated my wrist practicing this weekend, been getting treatment but unfortunately won't be able to play this week, bummed!,” Immelman tweeted late Wednesday.

Brian Harman will replace Immelman in the field.

Immelman underwent wrist surgery at the end of 2009. This year, Immelan has missed three cuts in five starts with a tie for 12th in Phoenix his best finish.