Detwiler spent the 2014 season in the bullpen for Washington, but he has experience starting and could fit either role with the Rangers next year. Texas had a deluge of injuries to its pitching staff last year and Detwiler should help them improve their depth in 2015.
Detwiler has spent his entire career in the Washington Nationals' organization. He was the sixth overall pick in 2007 and made his major-league debut that year with a scoreless inning of relief. He returned to the big leagues in 2009 and has been on the Nationals' roster for some or all of the last six seasons.
The 6'5'' southpaw has a career 3.82 ERA in 471 big league innings. Last season, he had a 4.00 ERA in 63 innings, all in relief. In 2013, Detwiler made 13 starts and in 2012, he made 27.
Bostick finds himself on the move for the second straight off-season. The second baseman was traded from the Oakland A's to the Rangers last off-season in a deal that moved Michael Choice to Texas and Craig Gentry to Oakland.
Bostick spent the 2014 season in the High-A Carolina League. He hit .251/.322/.412 with 11 homers and 24 stolen bases. Bostick has good power for a middle infielder and top-of-the-order speed. He will be 22 next season.
De Los Santos split his 2014 season between High-A and Low-A. The 22-year-old right-hander had a 1.92 ERA in 56.1 innings as a reliever. He struck-out 65 and walked 18. He also allowed just two homeruns. De Los Santos has a power arm and could move quickly.