Craig Tatum, catcher
Is he still a viable backup catcher for a major-league team?
Certainly. He’s a catch-and-throw guy, a very good defensive catcher (I don’t know if he quite rises to the level of ‘outstanding’). As a once-a-week backup, he’s fine.
Could he be a starter?
No. He’s a .220 hitter with no power. In 100 at bats, with good luck, he could easily hit .280, but he could just as easily hit .160.
Tatum was claimed on waivers by the Astros in October 2011. The Astros themselves waived Tatum in January, and he was claimed by the Diamondbacks.