The Astros signed left-handed reliever Gustavo Chacin on Wednesday to a Minor League contract with an invite to Spring Training.

Chacin was 2-2 with one save and a 4.70 ERA in a career-high 44 relief appearances in two stints with the Astros last season. He joined the staff May 4 and his first outing May 7 was his first career relief appearance.

He did not allow a run in 11 of his final 12 appearances, and posted a 1.29 ERA over that stretch.

Houston had outrighted Chacin, 30, off the 40-man roster earlier in the offseason, but decided to invite him back. The Venezuelan lefty even helped at the plate. His first Major League hit was a home run on May 31 against the Nationals.

Chacin is the Astros' 12th non-roster invite and seventh pitcher they have committed to for 2011.