The Mariners won again last night, thanks mostly to Carlos Silva (somehow Vidro hit a home run), and now stand at 2-1 after the first series. If not for some costochondritis, they might be 3-0. Who’s to blame thank for the M’s winning record?
Yuniesky Betancourt.
According to FanGraphs, he leads the team in Win Probability Added, a stat that puts every play into a context of how it helps a team win games. It doesn’t factor in defense, though. (If you’re curious, here’s the article everybody, even Google, links to about WPA.) Right now Yuni’s contributed 0.54 WPA–so Yuni’s given the team about half a win. The next closest on the team is Felix Hernandez with 0.35 WPA. I guess hitting .545 really helps a team win.

Also worth noting: Yuni played some great defense last night.