DETROIT -- Francisco Liriano threw a 60-pitch simulated game before Tuesday's game at Comerica Park and reported no problems with his right hamstring.
The next step: A rehab start with Triple-A Toledo on Sunday night.
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A running tally of the Tigers bumps, bruises and sprains in 2018.
If all goes well there, he could rejoin the Tigers on June 22, when they open a series at Cleveland, after just a three-week stint on the disabled list.
Left-handed reliever Daniel Stumpf has been throwing off flat ground with no problems, getting up to 120 feet this week.