The Detroit Tigers activated second baseman Carlos Guillen and pitcher Al Albuquerque from the disabled list Saturday.Guillen has been out of action all season after undergoing microfracture knee surgery. He was declared fit to return after hitting .316 with a homer and eight RBIs in 11 games during a rehabilitation stint with Triple-A Toledo.Guillen has been limited in each of the last three seasons, having played just 149 games in that span. The 35-year-old hit .273 with six homers and 34 RBIs in 253 at-bats in 2010.Albuquerque returns after missing two weeks with right forearm inflammation. The 25-year-old is 5-1 with a 2.79 ERA and 47 strikeouts in 29 innings.
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