He needed just six pitches to retire the IL in order in the seventh inning, getting two flyouts and a groundout.
McClendon, 25, is 4-2 with a 2.68 ERA in 17 games for Nashville after starting the season with Double-A Huntsville, where he was 1-1 with a 0.61 ERA in seven games.
The 6-foot-5 right-hander was a 10th-round draft choice in 2006 and was 4-3 with a 3.30 ERA and three saves while appearing in 41 games with Huntsville in 2009.
Nashville's other representative in the Triple-A All-Star Game was Luis Cruz, who finished the game at shortstop and was 0-for-2 with a strikeout.
Cruz, 26, is hitting .294 with six homers and 43 RBIs for the Sounds.