Omar Vizquel had 613 at bats and had 650 total chances at the ball in the field. He batted a respectable .287 and his fielding percentage was an unprecedented .995. The point is this. A team does not need their shortstop to hit .350 with 40 home runs. It does need their shortstop to make fewer errors.
Errors are killers.
They give a team extra opportunities when otherwise they should have been out of the inning. They contend that a bat like that is too much for a lineup to lose and that adding a guy with that kind of firepower wins games. I challenge anyone to watch the highlights of the Texas Rangers games this year. You'll see the most potent offensive lineup in the majors. Unfortuately they'll lose a lot of games 10-9.