The golfer's alleged mistress, 24, was arrested Wednesday in West Hollywood, Calif. for driving with a suspended license.
This is Grubbs's second time being caught for the offense, having been cited for the same crime on Feb. 4.
West Hollywood Sheriff's Sgt. Shawn Ruda tells PEOPLE that Grubbs had a $26,000 warrant for not clearing up the first citation and bail for this latest arrest will be $2,500.
"She'll have to pay both amounts if she wants to be released," Ruda said.