For the 2,111 official at-bats in his career, Mountcastle has a batting average of .265 with 559 base knocks. He has homered 91 times, with 949 total bases and also a .450 slugging percentage. Mountcastle has tallied a free base 159 times while fanning on 566 occasions. He has tallied 269 runs and has 328 RBIs. His on-base rate is .316 and he has a lifetime OPS of .766.
Mountcastle has tallied 128 base hits in 473 at-bats for an average of .271. He has gotten a free base 27 times and has accrued an OBP of .308. On the campaign, Mountcastle has tallied 0 runs, recorded 63 RBI and has 13 home runs. He has accrued an OPS of 0.733 with a slugging percentage of .425. He has struck out 114 times while compiling 201 total bases.
| Year | Team | BA | HR | H | BB | R | RBI | OBP | PA | AB | OPS | OPS+ | 2B | 3B | G | SLG | SB | CS | TB | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Career | .265 | 91 | 559 | 159 | 269 | 328 | .316 | 2,312 | 2,111 | .766 | N/A | 107 | 5 | 563 | .450 | 14 | 6 | 949 | 566 | |
| 2024 | BAL | 114.000 | 2 | 54 | 0 | 473 | 13 | .271 | 124 | 507 | .425 | 1 | 128 | 30 | 3 | .308 | 63 | 3 | 113 | 27 |
| 2023 | BAL | .270 | 18 | 114 | 37 | 64 | 68 | .328 | 470 | 423 | .779 | 117 | 21 | 1 | 115 | .452 | 3 | 1 | 191 | 107 |
| 2022 | BAL | .250 | 22 | 139 | 43 | 62 | 85 | .305 | 609 | 555 | .729 | 105 | 28 | 1 | 145 | .423 | 4 | 1 | 235 | 154 |
| 2021 | BAL | .255 | 33 | 136 | 41 | 77 | 89 | .309 | 586 | 534 | .796 | 112 | 23 | 1 | 144 | .487 | 4 | 3 | 260 | 161 |
| 2020 | BAL | .333 | 5 | 42 | 11 | 12 | 23 | .386 | 140 | 126 | .878 | 137 | 5 | 0 | 35 | .492 | 0 | 1 | 62 | 30 |
