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One big need to address on Tampa's roster is without a doubt the catcher position.
The four catchers the Rays used this this year combined for an RBI total of just 65, without one reaching a wOBA as high as .290. Defensively, the four weren't very good, either.
The two main catchers on the roster (who were the team's two catchers in 2012 as well) are Jose Molina and Jose Lobaton. Molina had a poor season offensively last year, but did well throwing out baserunners and framing pitches. Plus, he was essential in helping the pitching staff throughout the year.
The main problem with Molina is that he's 37, and thus he can't really provide the Rays with many innings.
Therefore, the team's backup catcher is a crucial role. Lobaton is in that position right now, and he's not the kind of guy the Rays would (or at least should) like playing 65-plus games for them.
Lobaton posted a .222/.323/.317 line last year with very little power, while throwing out just 16 percent of baserunners.
Whether it's via the trade market or free-agent market, the Rays really need to sign a backstop this winter.