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08/17/2012 3:34 PM EST

RHP Ryan Dempster placed on Restricted List

OF Leonys Martin recalled from Round Rock; Roy Oswalt to start Saturday

Toronto, ONT-The Texas Rangers today announced that RHP Ryan Dempster will miss the Toronto series this weekend due to personal reasons. He is expected to rejoin the club on Monday in Texas.

As a result, Dempster has been placed on the MLB Restricted List, effective today. To take his place on the active roster, Texas has recalled OF Leonys Martin (#27) from AAA Round Rock of the Pacific Coast League. Martin will be in uniform for tonight's game at Rogers Centre.

RHP Roy Oswalt will start in place of Dempster on Saturday in Toronto.

Dempster is 1-1, 8.31 in 3 starts since being acquired from the Chicago Cubs on July 31. The right-hander was 5-5, 2.25 in 16 starts with the Cubs.

Oswalt is 4-2, 6.53 in 9 games/6 starts since joining the Rangers on June 22.

Martin is batting .362 with 10 homers and 38 RBI in 45 games with the Express this season. He was previously with the Rangers in 2012 from June 15-July 30, batting .189 with 5 RBI in 15 games.

This story was not subject to the approval of Major League Baseball or its clubs.