| Year | AB | H | R | HR | RBI | BB | SO | SB | AVG | Rate |
| 2026 proj | 146 | 37 | 18 | 5 | 20 | 10 | 39 | 1 | 0.253 | 7.9 |
| 2025 | 332 | 83 | 34 | 7 | 35 | 15 | 98 | 3 | 0.250 | 12.4 |
| 2024 | 473 | 128 | 54 | 13 | 63 | 27 | 114 | 3 | 0.271 | 26.7 |
| 2023 | 423 | 114 | 64 | 18 | 68 | 37 | 107 | 3 | 0.270 | 31.7 |
| Date | News |
| 3/12/26 | O's Mountcastle exits after taking pitch off hand. Orioles first baseman Ryan Mountcastle was hit on the right hand by a pitch and left Wednesday's Grapefruit League game against the Pirates. Source: https://www.espn.com/mlb/story/_/id/48177596/oriol... |
| 3/11/26 | O's Mountcastle exits after taking pitch off hand. Orioles first baseman Ryan Mountcastle was hit on the right hand by a pitch and left Wednesday's Grapefruit League game against the Pirates. Source: https://www.espn.com/mlb/story/_/id/48177596/oriol... |
| 3/06/26 | Future uncertain, Orioles’ Ryan Mountcastle making most of spring chances. Orioles first baseman Ryan Mountcastle is off to a hot start in spring training after going 3-for-3 against the Cardinals on Friday. Source: https://www.baltimoresun.com/2026/03/06/orioles-ry... |
| 11/21/25 | Orioles tender 2026 contract to Ryan Mountcastle, let go of Albert Suárez. The Orioles tendered first baseman Ryan Mountcastle and several of their other arbitration-eligible players their contracts for 2026. Source: https://www.baltimoresun.com/2025/11/21/orioles-te... |
| 11/19/25 | Orioles’ nontender decision: Can Ryan Mountcastle, Coby Mayo coexist at 1B?. The nontender deadline is approaching and the Orioles must decide whether Ryan Mountcastle fits into their plans at first base. Source: https://www.baltimoresun.com/2025/11/19/orioles-no... |
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