You are a pinch hitter. Better yet, a clutch hitter. You know, when the game is on the line, the chips are down, and the fat lady is about to sing.
The utility infielder is used for late inning defense to protect a lead. Versatile guy on to have on the bench, cheap and therefore hard to let go. Definitely not a rock star though.
That's funny. If I were using sports analogies about myself or something I was working on, I wouldn't use one that essentially means "bad hitter".