David Aardsma Joins Mets" Bullpen The Mets have added an experienced arm to their struggling bullpen, calling up the right-hander David Aardsma from Class AAA Las Vegas. To make room for Aardsma, the Mets optioned the right-hander Collin McHugh to the farm team. Aardsma saved 69 games for Seattle from 2009 to 2010 before sitting out the 2011 season with hip and elbow operations. He had Tommy John elbow reconstruction surgery in July 2011 and returned to the majors for one game last September with the Yankees. ■ The Cleveland Indians placed the right-hander Zach McAllister on the 15-day disabled list and recalled the right-hander Carlos Carrasco. Carrasco can pitch while he appeals an eight-game suspension handed down by Major League Baseball for "intentionally throwing" at the Yankees" Kevin Youkilis in April. McAllister is on the disabled list, retroactive to June 3, because his right middle finger is sore. He is 4-5 with a 3.43 earned run average in 11 starts. Carrasco was 2-0 with a 3.21 E.R.A. at Class AAA Columbus.