Their big pitcher? If you are referring to big in size... it's Matt Prescott. However, if you are referring to a big pitcher in stature or "stuff", they don't really have one. They have good depth at the position, though.
Prescott should be an ace, with his size and the amount he's played in the past... but really, he doesn't have that kind of stuff... yet. We'll see how he comes out this year. Maybe he's improved, but he is still a tall, (sorry to say...) somewhat weak, body.
The rest of Bonney Lake's group is very impressive, considering they are a 1st year school with no seniors. Sean Montplaisir is the most well known prospect, but they have other solid junior players who had varsity experience as sophomores @ Sumner HS: Garry Kuykendall, Kaylor Hasbargen, Cory Waugh. Not a bad group of current sophs as well.
They should contend for the Seamount Pierce crown in their first season.