Tomlin is 5-7 with a 4.47 ERA in 15 games with Cleveland. He was sent to Triple-A Columbus on July 26 and made one start in the minors before being recalled. Tomlin hasn't won in four starts since pitching a one-hitter against Seattle on June 28.
Outfielder Nyjer Morgan, who was on the 60-day disabled list with a sprained right knee, was activated and released. Morgan last played on May 14.
Outfielder Tyler Holt was optioned to Columbus.