Jeff Beliveau's pitching style. Does the pause mess up a batter's timing?

That was the first time I'd seen Jeff Beliveau pitch.
Len and Bob made a big deal about this little pause Beliveau's got right when he rears back to throw.
(In the illustration I say "windup", but he was throwing from the set position.)
I didn't think much about it.
But then he proceeded to strike out all 3 Dodgers he faced, and two more in the next inning.
With the Cub bats getting just 5 hits and no runs, Beliveau was the most exciting thing about Sunday's zero to five loss.
I did a joke thing about him awhile ago, mostly because I remembered Theo Epstein making kind of a big deal about Beliveau at the convention.
Yeah it was the back end of a ST game, but still kind of impressive.
And...who knows, maybe he's got something going with that little hitch. 
Probably throws off the batter's timing a bit.
He seemed to vary it, so that sometimes the pause barely happened, and others probably seemed like a loooong time if you were the batter.
I feel like lots of my posts have been ending up with "kinda cool" lateley.
But...kinda cool.

Old buddy Ted Lilly looked pretty good, while Matt Garza couldn't even get through 2 innings, giving up 4 runs.
I remember last year when he complained about the dry Arizona air messing with his pitching and, because I didn't really know him it kinda made me mad.
But I'll cut him slack this time around.
Guy's a gamer.