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White Sox acquire Jason Frasor and Zach Stewart from Toronto in exchange for Edwin Jackson and Mark Teahen
07/27/2011 12:36 PM ET

CHICAGO - Prior to today's game vs. Detroit, the Chicago White Sox acquired right-handed pitchers Jason Frasor and Zach Stewart from the Toronto Blue Jays in exchange for right-hander Edwin Jackson and infielder Mark Teahen. Stewart will be optioned to Class AAA Charlotte.

Frasor, 33, is 2-1 with a 2.98 ERA (14 ER/42.1 IP) and 37 strikeouts in 44 relief appearances with Toronto this season. The 5-foot-9, 180-pounder is tied for the team lead with 10 holds and has limited opponents to a .244 (38-156) average, including a .228 (18-79) mark by right-handers.

A native of Chicago who resides in Oak Forest, Ill., Frasor has gone 24-28 with a 3.69 ERA (189 ER/461.0 IP) and 426 strikeouts in 455 appearances over eight major-league seasons, all with Toronto (2004-11). He has posted 36 saves and 71 holds while averaging 8.3 strikeouts per 9.0 IP. Opponents have batted just .235 (403-1,715) against Frasor, with right-handers hitting .226 (212-937).

Frasor's best season came in 2009 when he went 7-3 with a 2.50 ERA (16 ER/57.2 IP) and 11 saves in 61 games with the Blue Jays and held right-handers to a .140 (14-100) batting average.

Frasor was acquired by the Blue Jays from Los Angeles-NL on March 30, 2004 in return for outfielder Jason Werth. He attended Oak Forest High School and graduated from Southern Illinois University.

Stewart, 24, was 5-5 with a 4.20 ERA (44 ER/94.1 IP) in 16 starts with Class AA New Hampshire this season and was named to the Eastern League midseason All-Star Team. He also went 0-1 with a 4.86 ERA (9 ER/16.2 IP) in his first three major-league starts with Toronto, making his debut on June 16 vs. Baltimore (2 ER/7.0 IP).

The 6-foot-2, 205-pounder has gone 18-13 with a 3.05 ERA (125 ER/368.2 IP) in 100 games (56 starts) over four minor-league seasons. Stewart was selected by Cincinnati in the third round of the 2008 draft, and then traded to Toronto with infielder Edwin Encarnacion and pitcher Josh Roenicke on August 1, 2009 in exchange for third baseman Scott Rolen


Jackson, 27, is 7-7 with a 3.92 ERA (53 ER/121.2 IP) and 97 strikeouts in 19 starts this season. He was acquired from Arizona on July 31, 2010 in exchange for pitchers David Holmberg and Daniel Hudson and went 11-9 with a 3.66 ERA (80 ER/196.2 IP) and 174 strikeouts in 30 starts with the Sox.

Teahen, 29, batted .209 (24-115) with three home runs and 11 RBI in 50 games with the Sox this season. He was acquired from Kansas City on November 6, 2009 in exchange for infielders Chris Getz and Josh Fields and hit .241 (84-348) with seven homers and 36 RBI in 127 games from 2010-11.

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

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