Tomlin's activation comes three days after the one-year anniversary of his surgery.
"It's a relief, it really is," Tomlin said via text message. "Obviously, the goal is to get back to the big leagues and compete and try to help that team win games as much as you can. But it does feel good to be off the 60-day [DL] without any hiccups or setbacks to this point. I feel very fortunate in that aspect."
Tomlin went under the knife on Aug. 22 last season, after pitching through discomfort in his throwing arm. In his 21 appearances for Cleveland in 2012, the 28-year-old right-hander went 5-8 with a 6.36 ERA. It was a drastic contrast to his breakout showing in 2011, when Tomlin posted a 12-7 record to go along with a 4.25 ERA in 26 games for the Indians.
Over parts of three Major League campaigns, Tomlin has gone 23-19 with a 4.95 ERA in 59 outings.
In eight Minor League rehab games since returning to the mound, Tomlin has fashioned a 2.08 ERA and a 0.69 WHIP. Across 17 1/3 innings, the right-hander has scattered 12 hits, piled up 12 strikeouts and issued no walks between stops in Rookie ball, Class A, Double-A and Triple-A.
Jordan Bastian is a reporter for MLB.com. Read his blog, Major League Bastian, and follow him on Twitter @MLBastian. This story was not subject to the approval of Major League Baseball or its clubs.