Good morning, kelvinp.
The crossfire, as I said, is a move that works only with the sidearm delivery---and here's how it works. Say you're a righthanded pitcher. You go in to your windup, or the stretch, as the case may be---and then you take a step in the direction of third base, whip around and deliver the pitch from that angle. (The reverse is true if you're a southpaw, you step toward first base and deliver the pitch from that angle.) I first heard about it when Ewell Blackwell was using it; an injury forced him to alter his pitching motion and so he came up with this. I picked up on it and worked around with it, and one day I mentioned this to my pitching coach. The incredible Ed Lopat said to me, "Let's see what you're doing with it. Just go through the move." I did so, and immediately he told me that I wasn't getting quite the momentum going into it from the stretch the way I was from the full windup. Urp. I had no idea---and then I had to confess that I didn't have much occasion to work from the stretch, not as a starter anyway.
He said, quietly and emphatically, "You're getting the batters out." And then he came up with a drill I could use to get the move up to speed from the stretch---it consisted simply of shortening my stride and taking two extra steps towards third. It didn't take long before I got the speed I wanted. I had absolutely fallen in love with the crossfire, and I used it so much that one day when he was helping me with my circle change he said to me, "I know you're going to crossfire it. You use that move with everything you throw."
I've seen it used in recent years. Remember Jeff Nelson? He used to use it quite a lot, and there are a few other sidearm pitchers who will go to it. It's a nice move, and if you're a sidearmer you can make very good use of it. 8) :baseballpitcher: