CLEVELAND — The Cleveland Indians' struggling offense got an early boost during Monday's series-opening game in Seattle against the Mariners. 

Making his first at-bat of the season, 2B Jason Kipnis hit an RBI single to left in the first inning to propel the Tribe to a 2-0 lead. 

Kipnis was limited to just 10 Cactus League games in Spring Training because of hip, quad, and calf injuries, then suffered a calf strain on March 20. Kipnis started a rehab assignment at AAA Columbus on April 5. 

In addition to Kipnis' return to the lineup on Monday, the Indians also announced that SS Francisco Lindor will begin a rehabilitation assignment on Tuesday at AAA Columbus. 

The switch-hitting Lindor was making steady progress from a right calf injury when he rolled his ankle while caught in a rundown during a minor league scrimmage in Arizona. Lindor batted .277 last season with 38 home runs, 92 RBIs and 25 steals. He will rehab at AAA Columbus. 

Without Kipnis and Lindor, the Indians' offense has sputtered out of the gate. The Tribe has scored a total of 52 runs in their first 15 games and are hitting just .194 as a team, the worst average in all of baseball.