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Baseball America Prospect Report—April 9, 2021

Nick Neidert, RHP, Marlins: Thrust into a starting role without a whole lot of advanced warning because of the Marlins’ multiple injuries to members of the starting rotation, Neidert’s first MLB start went better than may have been expected. He was pulled after 4.1 innings thanks to some control troubles, but he left with the lead, having allowed only one run on three hits and five walks. He struck out three. Neidert generally sat 92-93 mph, a tick above where he sat last year and he touched 95.

Ryan Mountcastle, LF, Orioles: Mountcastle hit his first home run of the season, a two-run shot in the first inning. It’s been a slow start for Mountcastle as he’s hitting .179/.233/.321.

Yermin Mercedes, DH, White Sox: Chicago has gotten a big boost from a rookie DH, but it’s Mercedes, the well-traveled former MiLB Rule 5 pick who’s doing it instead of 2019 first-round pick Andrew Vaughn. Mercedes’ second home run of the season was a majestic 485-foot blast that is the longest regular season home run a White Sox has hit in the Statcast era.

Dylan Carlson, CF, Cardinals: It’s been an unusual start to the season for Carlson. He’s hitting only .182 with a .269 on-base percentage, but he’s also been one of the Cardinals’ best hitters thanks to three home runs and (on Thursday) his first double of the season. He’s slugging .636.


ARIMAJ#3Geraldo Perdomo SS1000.100BB (3)
ARIMAJ#9Pavin Smith RF4121.2352B (2)
BALMAJ#5Ryan Mountcastle LF4112.188HR (1)
BOSMAJ#3Bobby Dalbec 1B4000.095
CWSMAJ#3Nick Madrigal 2B3210.250BB (3)
KCMAJ#6Kyle Isbel RF3000.250
MIAMAJ#4Jazz Chisholm 2B1000.176BB (4)
OAKMAJ#30Seth Brown RF2000.200
SEAMAJ#29Sam Haggerty LF4000.000
SEAMAJ#6Taylor Trammell CF2000.1052 BB (6), CS (1)
STLMAJ#1Dylan Carlson CF3010.1822B (1)
STLMAJ#30John Nogowski PH-1B2000.250
STLMAJ#15Justin Williams RF2000.071BB (1)
TORMAJ#5Alejandro Kirk C0000.000


BOSMAJ#17Garrett Whitlock2.0000030.00
HOUMAJ#11Enoli Paredes0.0000200.00
HOUMAJ#25Blake Taylor0.2000003.00
KCMAJ#15Carlos Hernandez0.13221010.80
MIAMAJ#15Nick Neidert4.1311532.08
MILMAJ#13Drew Rasmussen1.01221322.50L (0-1)
MINMAJ#14Jorge Alcala1.0000000.00
Wander Franco Julioaguilargetty

2021 Baseball America MLB All-Rookie Team

One area of strength for the 2021 rookie crop was starting pitching.

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