The Indians exercised Tomlin's $3 million option for the 2018 season, The Athletic's Zack Meisel reports.
Tomlin is tentatively scheduled to start Game 4 of the ALDS against either the Twins or Yankees.
Tomlin gave up two runs on seven hits over 5.1 innings Wednesday while striking out five but didn't factor into the decision in a 6-5 win over the Angels.
Tomlin (9-9) picked up the win after allowing two runs on four hits while striking out three batters across five innings Saturday against the Orioles.
Tomlin (8-9) picked up the win over the Tigers on Sunday, giving up one run on six hits and a walk over 5.2 innings while striking out two.
The Indians activated Tomlin (hamstring) from the 10-day disabled list Friday.
Tomlin (hamstring) will not start either game of Wednesday's doubleheader against the Yankees, Jordan Bastian of MLB.com reports.
Tomlin (hamstring) will be activated from the disabled list to start Wednesday's game against the Yankees, Zack Meisel of The Athletic Cleveland reports.
Tomlin (hamstring) will go on a rehab assignment Friday and is expected to rejoin the big-league rotation Aug. 30 at Yankee Stadium, Zack Meisel of The Athletic Cleveland reports.
Tomlin (hamstring) threw three innings of a simulated game Monday.