Joseph Mack: Everything you need to know

Mack went 2-for-4 with an RBI in Tuesday's loss to the Orioles. A third-inning single by the rookie catcher brought home Kyle Stowers, giving Mack his first hit and RBI in MLB, and he added another knock in the eighth. The 23-year-old top prospect will get a long look in the starting role from the Marlins, with Liam Hicks -- who got the start at first base Tuesday before taking over behind the plate for the top of the ninth after Mack was lifted for a pinch runner -- seeing more of his playing time at 1B and DH as a result.

Mack went 0-for-3 with a strikeout in Monday's loss to the Phillies. Making his big-league debut and batting seventh, Mack was fanned by Aaron Nola in the fifth inning, between a groundout and a pop-up in foul territory. On the bright side, the rookie catcher guided Janson Junk to a strong outing in a 1-0 loss, and it's his defensive work rather than his bat that the Marlins are counting on to be an upgrade over Agustin Ramirez. While he'll split time behind the plate with Liam Hicks, Mack will get a long runway to establish himself at the top level after slashing .251/.336/.447 over 122 career games in Triple-A with 21 homers.

The Marlins selected Mack's contract from Triple-A Jacksonville on Monday. Mack earned his first big-league promotion after slashing .244/.388/.378 with three home runs and a 20:22 BB:K in his first 24 contests with Jacksonville. According to Christina De Nicola of MLB.com, Mack is in line to start in Monday's series finale versus the Phillies, and the 23-year-old should be in store for ample playing time while sharing reps at catcher with Liam Hicks. Mack is worth a pickup in two-catcher fantasy leagues where he's still available.