Optioned RHP MATT LANGWELL to AAA Columbus.
Martinez, 30, has spent the entire season with the Clippers, going 2-6 with a 6.23 ERA (86.2 IP, 119 H, 64 R-60 ER, 21 BB, 56 SO) in 15 games/starts. Although he has appeared in 19 games/6 starts at the Major League level for San Francisco (2009-10), Pittsburgh (2010) and Arizona (2012), Martinez will be looking to see his first career action with Cleveland.
Langwell, 27, tossed 1.0 inning in Game 2 of yesterday's doubleheader against the Chicago White Sox, his fifth appearance for Cleveland this season. He began the year with the Clippers and has gone 3-2 with a 3.00 ERA (33.0 IP, 32 H, 11 R-ER, 1 HR, 14 BB, 27 SO) and one save in 24 games/one start at Triple-A.