Quantrill will start Saturday's game against Arizona, Kevin Acee of The San Diego Union-Tribune reports.
Grisham is not in Thursday's lineup against the Dodgers.
Mejia is not starting Thursday against the Dodgers.
Cronenworth isn't starting Thursday against the Dodgers.
Mateo (illness) was activated from the COVID-19 injured list Thursday.
France was optioned to the Padres' alternate training site Thursday.
Grisham went 2-for-4 with a double in Wednesday's loss against the Dodgers.
Davies (2-2) was tagged with the loss Wednesday against the Dodgers. He tossed seven innings of two-run ball, allowing four hits and two walks while fanning five.
Hosmer isn't in the lineup Wednesday against the Dodgers.
Alonso was acquired by the Padres from the Braves on Tuesday in exchange for cash considerations, Dennis Lin of The Athletic reports.
Mejia remains on the bench Tuesday against the Dodgers.
Quantrill (2-0) earned the win Monday against the Dodgers. He tossed three scoreless innings, allowing two hits while fanning three.
Perdomo didn't factor into the decision in Monday's contest between the Padres and the Dodgers. He allowed one run on two hits and one walk across one inning.
Poweranz earned the save Monday against the Dodgers after tossing a perfect ninth inning.
Hedges went 1-for-2 with a solo home run in Monday's win over the Dodgers.
Mejia will sit Monday against the Dodgers.
France went 1-for-4 with a solo home run, a walk and two runs in a win over the Diamondbacks on Sunday.
Mejia went 1-for-4 with a two-run home run in Sunday's victory over Arizona.
Patino worked 1.2 innings out of the bullpen in Sunday's 9-5 win over the Diamondbacks, giving up two runs on two hits and four walks while striking out three.
Richards will make his next start Tuesday against the Dodgers, Dennis Lin of The Athletic reports.
The Padres will have Perdomo start Monday's series opener versus the Dodgers, Dennis Lin of The Athletic reports.
Perdomo will start Tuesday's game against the Dodgers, Dennis Lin of The Athletic reports.
Myers went 2-for-4 with a two-run homer in Sunday's 9-5 win over Arizona.
Machado went 2-for-4 with a pair of solo home runs in Sunday's 9-5 win over Arizona.
Lamet (2-0) allowed one run on one hit across 6.2 innings Sunday, striking out 11 and earning the win over the Diamondbacks.