Hell there are quite a few players like that....wont/can't gamble high.
Mikey Betts was a very solid strong player back in the 70's-80's (died about 3-4yrs ago,tulsa native) played well up untill his death. Mike was a champion for lunch money.....but play high stakes and he wilted.
Side note: made a dam good hitting cue also, took the name after what they called him.....Silky cues, mike had a stroke smooth as silk
Mike was house pro up at Magoos for years, and made cues out of there. Michelle McDermott (Jim McDermotts daughter and owner of Magoos/tulsa billiards palace) still has her Silky that her uncle mike made for her....she won't shoot with anything else.