The Arizona Diamondbacks made a major change at the catcher position Friday as they surprisingly let go of starting catcher Welington Castillo and then signed veteran catcher Jeff Mathis to a 2-year/$4 million contract. Mathis is a decent backup to be used sparingly throughout a season and at 33 years old he’ll mainly provide some veteran leadership for Arizona. Mathis hit only .238 with 2 home runs last season in 41 games for the Marlins, so any offensive production from him would certainly not be expected. I personally don’t like this move since he won’t provide much as backup for the Diamondbacks. The surprising non-tender of Welington Castillo puts more pressure on Mathis to at least split time with Chris Herrmann at the catcher position. I’m not sure that Mathis is ready to play more games because he won’t provide much as he is only a .197 career hitter. Mathis provides decent catching depth, but he can’t be relied upon to play more than than the 41 games that he played last season. Ultimately, Mathis will likely play a bigger role for Arizona and that’s definitely not a good idea considering that he is a mediocre catcher.