Ramirez, 24, made the Mariners' Opening Day roster in 2014 and started their second game of the season. Over seven stints with Seattle last season, he went 1-6 with a 5.26 ERA in 17 games.
In the Minors, he pitched in 16 games between Triple-A Tacoma and Class A Advanced High Desert, going 6-6 with a 3.91 ERA. Following the season, he pitched for Cardenales de Lara in the Venezuelan Winter League, going 2-0 with a 0.30 ERA and 22 strikeouts in five starts.
He is 1-2 with a 6.23 ERA in five appearances this spring. Over parts of three Major League seasons, he is 7-12 with a 4.62 ERA in 47 games (35 starts). He was originally signed by the Mariners as a non-drafted free agent in 2007 from Nicaragua and could become the first Nicaraguan-born player to appear in a game for the Rays.
Montgomery, 25, pitched in six games out of the bullpen this spring, recording a 2.38 ERA with one save. He spent the 2014 season with Triple-A Durham, where he went 10-5 with a 4.29 ERA and was named an International League midseason All-Star. Over seven Minor League seasons, he has compiled a 42-47 record and 4.28 ERA in 155 games (150 starts).
He was acquired from the Royals on Dec. 9, 2012, as part of a seven-player trade involving James Shields.
Bill Chastain is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.