Ramirez appeared in 28 games for the Rangers last year, batting .217/.341/.348 in 85 plate appearances. The 26-year-old has spent most of his seven-year pro career in the minors, where he has a .298/.396/.476 career line. The Rangers already have three backstops on their 40-man roster: Taylor Teagarden, Yorvit Torrealba and Matt Treanor.
Rapada, 30 in March, appeared in 13 games for the Rangers last year. He pitched just nine innings, walking seven and striking out five. He spent most of the season at Triple-A, where he posted a 1.82 ERA with 9.3 K/9 and 3.2 BB/9 in 59 1/3 innings. Those numbers, which are similar to the ones he posted for the Tigers' Triple-A affiliate in 2009, have yet to translate into big league success for the left-hander.