Y.H. "Kevin" Cheng first played in the USA a couple/three years ago, at the BCA Nationals event, in Vegas. He entered and won one of the amateur singles event (Open or Advanced?) and torched the field. There was a big dust up about it and CSI wanted to withhold his first place winnings, saying that he basically was a ringer. Thing is, it wasn't sorted out before the tournament started.
For that matter, he sure wasn't the first guy to try sneaking under the radar at hte BCA amateur event. A couple guys come to mind, like:
Jason Kirkwood- wins at the BCA, then, a few months later, finishes 3rd in an IPT Pro event
Chris Melling- played the BCA Open event about 10 years ago. He was definitely "pro speed" at the time.
There's more, but this is all i have, in a 3 minute post...
Eric
I believe it was in the Open class at the 2012 BCAPL Nationals. A couple of his teammates got in the top 32 also. Their Taiwan team was entered into the Open/mixed teams but after seeing there skills in singles were moved to the Advanced division where they still won pretty handily.
Their winnings were not paid in full do to a controversy of skill level. I believe they got paid some to cover their travel expenses and the balance was awarded to other players they defeated during the tournament. I can't remember all the details.