I think Ken nails the real issue when he mentions this isn't the first "Daily Double hunter" the show has seen. Realistically, excluding Chuck Forrest, who was bouncing around the board to keep his opponents off-balance as opposed to hunting for daily doubles, it's been going on for a few years now from more than a few players. So why is Arthur Chu getting the attention now?

I'd hope it's for the fact that he has a bit of a grating buzzer practice (I'm surprised he isn't anchoring his hand against the lectern to reduce any windup and help with precision) and that he was flippant with some Daily Doubles early on (the $5 sports "I don't know" caught me off-guard), but I have a feeling it's more sinister than that.