Maeda tossed two scoreless innings in Saturday's Grapefruit League game against the Phillies. He didn't allow a hit or a walk and struck out four.
Maeda was throwing 92 mph during a live batting practice session Tuesday, Evan Petzold of the Detroit Free Press reports.
With Alex Cobb (hip) likely out for about a month, Maeda could be at least a temporary option to slide into the starting rotation, Cody Stavenhagen of The Athletic reports.
Maeda is starting Sunday against the White Sox.
Maeda allowed three runs on two hits and a walk across two innings of relief in Saturday's 4-2 loss to the Orioles. He struck out two.
Maeda struck out one over 1.2 perfect innings out of the bullpen in Thursday's 4-3 win over the Padres.
Maeda is expected to be used as a bulk reliever behind opening pitcher Mason Englert in Wednesday's game against the Angels, Evan Woodbery of MLive.com reports.
Maeda didn't factor into the decision Thursday against Seattle, allowing just one hit and one walk over 5.2 scoreless innings. He struck out five.
Maeda allowed one run on five hits across five innings of relief in Sunday's 5-0 loss to the Twins. He struck out four.
Maeda allowed three runs on three hits across two innings of relief in Saturday's 7-3 win over the Blue Jays. He struck out one.