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St. Louis Cardinals · Pitcher
At 31, this Cardinals pitcher brings proven save upside after accumulating 20 saves through early 2026, making him a reliable closer option for fantasy managers seeking ERA and WHIP stability with his sub-1.20 ratios. His strikeout production remains solid with 34 K in 34.1 innings, though the 3.93 ERA marks a notable uptick from his excellent 2.06 mark last season, signaling some regression or increased workload volatility heading into the year. The Mid-Season All-Star selection in 2018 reflects past success, and his PCL Post-Season honors in 2023 demonstrate continued development in the minors, but the current-season ERA elevation warrants caution regarding consistency. Fantasy managers should view him as a saves specialist with streaky performance metrics, offering wins and strikeouts as secondary benefits while monitoring whether his ERA stabilizes.
Riley O'Brien collects 35th save in extras
Relief pitcher Riley O'Brien secured his 35th save of the season for St. Louis, allowing an unearned run while striking out one in a perfect outing in the 10th inning of Wednesday's 8-6 extra-inning victory over Los Angeles. O'Brien has been a workhorse closer for the Cardinals down the stretch.
Sep 3, 2026
Riley O'Brien records 29th save for Cardinals
St. Louis closer Riley O'Brien earned his 29th save of the season, tossing a perfect ninth inning in Sunday's win over Colorado. The reliable closer continues to strengthen his case for saves down the stretch.
Aug 10, 2026
Riley O'Brien records 25th save
St. Louis Cardinals closer Riley O'Brien earned his 25th save of the season on Friday, striking out one while allowing a hit and walk over a scoreless inning against Arizona. O'Brien continues to be a reliable closer option for fantasy rosters. His consistency makes him a valuable late-inning pitcher.
Jul 18, 2026
| Year | Team | G | GS | W | L | SV | ERA | WHIP | K | IP | BB |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | Cincinnati Reds | 1 | 1 | 0 | 1 | 0 | 13.50 | 3.75 | 2 | 1.1 | 3 |
| 2022 | Seattle Mariners | 1 | 0 | 0 | 0 | 0 | 0.00 | 2.00 | 1 | 1.0 | 1 |
| 2024 | St. Louis Cardinals | 8 | 0 | 0 | 0 | 0 | 11.25 | 2.63 | 11 | 8.0 | 8 |
| 2025 | St. Louis Cardinals | 42 | 0 | 3 | 1 | 6 | 2.06 | 1.15 | 45 | 48.0 | 22 |
| 2026 | St. Louis Cardinals | 60 | 0 | 3 | 7 | 36 | 4.03 | 1.28 | 57 | 58.0 | 26 |
| Career | Totals | 112 | 1 | 6 | 9 | 42 | 3.79 | 1.35 | 116 | 116.1 | 60 |
Source: MLB Stats API · Multi-team seasons show combined totals — click to expand
| Year | Team | G | GS | W | L | SV | ERA | WHIP | K | IP | BB |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | Princeton Rays | 11 | 10 | 1 | 0 | 0 | 2.20 | 1.10 | 40 | 41.0 | 17 |
| 2018 | 2 teams▼ | 25 | 13 | 8 | 4 | 0 | 2.75 | 1.14 | 103 | 88.1 | 42 |
| 2019 | 2 teams▼ | 20 | 17 | 7 | 6 | 0 | 3.16 | 1.17 | 107 | 102.2 | 44 |
| 2021 | Louisville Bats | 23 | 22 | 7 | 7 | 0 | 4.55 | 1.31 | 121 | 112.2 | 55 |
| 2022 | 2 teams▼ | 33 | 1 | 1 | 3 | 0 | 7.03 | 1.89 | 47 | 39.2 | 30 |
| 2023 | Tacoma Rainiers | 51 | 3 | 2 | 5 | 15 | 2.29 | 1.22 | 86 | 55.0 | 31 |
| 2024 | Memphis Redbirds | 14 | 0 | 1 | 0 | 1 | 1.35 | 0.98 | 9 | 13.1 | 5 |
| 2025 | Memphis Redbirds | 19 | 0 | 1 | 0 | 3 | 2.79 | 1.24 | 32 | 19.1 | 8 |
| Career | Totals | 196 | 66 | 28 | 25 | 19 | 3.49 | 1.26 | 545 | 472 | 232 |
Source: MLB Stats API · Multi-team seasons show combined totals — click to expand