It is the current opinion of The Jeopardy! Fan that Kelly Donohue was signalling his number of wins at the start of each episode.

As evidence of this, note his introduction to yesterday’s game. #Jeopardy

Additionally: Here is his signal from Friday. #Jeopardy

That being said: I have contacted @Jeopardy's publicity contact requesting comment for the first time ever on an issue.

In the time since this was originally posted, further information has come to light.

It is now my current opinion that the actions of Kelly Donohue on tonight’s episode of @Jeopardy were no accident and that the previous actions were very likely for deniability’s sake.