Greinke (shoulder) threw a bullpen session recently and is tracking toward a return from the 15-day injured list to start Thursday versus the Tigers, Jaylon T. Thompson of The Kansas City Star reports.
Thursday is the first day he's eligible to return after he landed on the IL earlier this month with right shoulder tendinitis. Greinke has posted an ugly 5.44 ERA over 18 starts for Kansas City this season.