I'm pretty sure that someone did a study about whether it was fact or fiction that Home Run Derby participation ruins a player's swing, but I can't seem to find it right now.  So instead, here's what Two Guys From ESPN, Nomar Garciaparra and John Kruk, had to say on the subject during a conference call:Q. Nomar, Matt Kemp is doing this for the first time. Maybe he's not your traditional slugger type body type. He might be more your body type. So speaking from experience, how does this kind of event mess around with your swing or is that kind of an overrated thing that gets talked about too much?Garciaparra: Well, first of all, I wish I had his body type. I don't think we're the same body type. Are you kidding me? Wow. I don't think it will mess with his swi