It's probably safe to assume who Rickie Fowler's grandmother's favorite professional golfer is.
But now, thanks to some photographic evidence provided by the PGA Tour's Brian Wacker, we have a pretty good idea who could be a close second.
Fowler's grandmother was spotted getting an autograph from Jason Day after he completed his final round on Sunday at the Hyundai Tournament of Champions.
Everyone wants @JDayGolf's autograph...even @RickieFowler's grandmother ... pic.twitter.com/bfAdX00iiW
— Brian Wacker (@pgatour_brianw) January 11, 2016
Somewhere, the wheels are spinning in Wilmer Valderrama's head about a 'Yo Momma' PGA Tour spinoff.