O’Neill has accrued an average at the plate of .246 for his career in baseball with 313 runs scored and an OPS of .792. He has gone down on strikes 650 times and has gotten a free base on 189 at-bats, which has contributed to a .322 on-base percentage. In his MLB career, O’Neill has hit 109 baseballs out of the park while knocking in 278 runs. His career slugging percentage is .469 and he has totaled 880 bases. For his time in the league, he faced a pitcher 2,109 times and has delivered a hit 462 times.
O’Neill has a tally of 99 base hits out of 411 AB’s and has a batting average of .241. He has taken a base 53 times and has an on-base percentage of .336. For the year, O’Neill has compiled 74 runs, amassed 61 RBI and has hit 31 home runs. He has earned an OPS of 0.847 with a slugging percentage of .511. He has gone down on strikes 159 times while amassing 210 total bases.
| Year | Team | BA | HR | H | BB | R | RBI | OBP | PA | AB | OPS | OPS+ | 2B | 3B | G | SLG | SB | CS | TB | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Career | .246 | 109 | 462 | 189 | 313 | 278 | .322 | 2,109 | 1,875 | .792 | N/A | 85 | 3 | 590 | .469 | 44 | 9 | 880 | 650 | |
| 2024 | BOS | 159.000 | 0 | 74 | 0 | 411 | 31 | .241 | 113 | 473 | .511 | 1 | 99 | 18 | 3 | .336 | 61 | 4 | 132 | 53 |
| 2023 | STL | .231 | 9 | 55 | 28 | 27 | 21 | .312 | 266 | 238 | .715 | 94 | 14 | 0 | 72 | .403 | 5 | 0 | 96 | 67 |
| 2022 | STL | .228 | 14 | 76 | 38 | 56 | 58 | .308 | 383 | 334 | .700 | 101 | 11 | 1 | 96 | .392 | 14 | 4 | 131 | 103 |
| 2021 | STL | .286 | 34 | 138 | 38 | 89 | 80 | .352 | 537 | 482 | .912 | 150 | 26 | 2 | 138 | .560 | 15 | 4 | 270 | 168 |
| 2020 | STL | .173 | 7 | 24 | 15 | 20 | 19 | .261 | 157 | 139 | .621 | 70 | 5 | 0 | 50 | .360 | 3 | 1 | 50 | 43 |
| 2019 | STL | .262 | 5 | 37 | 10 | 18 | 16 | .311 | 151 | 141 | .723 | 90 | 6 | 0 | 60 | .411 | 1 | 0 | 58 | 53 |
| 2018 | STL | .254 | 9 | 33 | 7 | 29 | 23 | .303 | 142 | 130 | .803 | 115 | 5 | 0 | 61 | .500 | 2 | 0 | 65 | 57 |
