Florida recalled Tim Wood from Triple-A New Orleans to take Calero's roster spot. While the right-hander has been impressive for the Zephyrs with a 1.19 ERA over 22 2/3 innings, filling Calero's shoes will not be an easy task.
Calero has been a key member of manager Fredi Gonzalez's bullpen. He has compiled a 1-0 record to go with his 2.08 ERA over a team-high 36 appearances.
The 34-year-old has been a consistent arm for the Marlins and helped get the team out of tough situations all year. Calero last pitched on Wednesday in Boston, going two-thirds of an inning and allowing his first run in a month.
Calero felt some stiffness on Wednesday night against the Red Sox. He had an MRI exam when he returned to Florida which revealed the inflammation.
This is not the first time the reliever has had arm trouble. He suffered a torn right rotator cuff in 2008 and had elbow problems in 2005.
Gonzalez is hopeful that Calero will be ready to return after the 15-day stint is up. The earliest he can return is for the July 3 game against the Pirates.
David Villavicencio is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.