Am I a jinx or something? Just hours after I had written that the A’s bench is not a bottomless pit, my statement gets tested. Mark Ellis is out 6-8 weeks after dislocating his shoulder in a collision with Bobby Crosby.

We’ll soon find out how valuable Ellis’ defense really is. If Hudson and Mulder start giving up a lot more hits than usual this April, we’ll know why.

Although Frank Menechino is also hurt, the A’s shouldn’t miss much offensively. And this illustrates what I enjoy most about watching Billy Beane work. You can talk all you want about Hudson, Mulder, Zito and Chavez, but Beane’s real genius shows up in the 35th-40th men on the roster. He creates depth at every position. When Ellis gets hurt, he not only has one competent backup, he has three (with Baseball Prospectus projections):

The entire division has only one middle infield backup, Eric Young, who is a better hitter than the A’s fourth-string second baseman. That’s why Billy Beane is so good. And that’s why I said the A’s can win a war of attrition.

I just wish I wasn’t so right so soon.