Riley O'Brien

STL Cardinals • #55 • Reliever

Active
Position Reliever
Height 6'4"
Weight 180
Age 30
Birthdate Feb 6, 1995
Birthplace Seattle, WA, USA
School College of Idaho

Riley O'Brien Projections, Player Props and Stats

Strikeouts Thrown

1.07 / game
(2025) avg
Date Opponent K Close
Sep 28 @ CHC CHC 2 -
Sep 24 @ SF SF 0 -
Sep 23 @ SF SF 1 -
Sep 21 vs MIL MIL 0 -
Sep 20 vs MIL MIL 1 -
Sep 16 vs CIN CIN 1 -
Sep 14 @ MIL MIL 2 -
Sep 13 @ MIL MIL 0 -
Sep 10 @ SEA SEA 2 -
Sep 7 vs SF SF 0 -
Last 10 average 0.9

Outs Recorded

3.43 / game
(2025) avg
Date Opponent Outs Close
Sep 28 @ CHC CHC 3 -
Sep 24 @ SF SF 3 -
Sep 23 @ SF SF 1 -
Sep 21 vs MIL MIL 3 -
Sep 20 vs MIL MIL 4 -
Sep 16 vs CIN CIN 3 -
Sep 14 @ MIL MIL 3 -
Sep 13 @ MIL MIL 0 -
Sep 10 @ SEA SEA 6 -
Sep 7 vs SF SF 3 -
Last 10 average 2.9

To Record A Win

3
(2025) total wins
Date Opponent Wins Close
Sep 28 @ CHC CHC - -
Sep 24 @ SF SF - -
Sep 23 @ SF SF - -
Sep 21 vs MIL MIL - -
Sep 20 vs MIL MIL - -
Sep 16 vs CIN CIN - -
Sep 14 @ MIL MIL - -
Sep 13 @ MIL MIL - -
Sep 10 @ SEA SEA - -
Sep 7 vs SF SF - -
Wins in last 10 0

Hits Allowed

0.79 / game
(2025) avg
Date Opponent Hits Close
Sep 28 @ CHC CHC 1 -
Sep 24 @ SF SF 2 -
Sep 23 @ SF SF 0 -
Sep 21 vs MIL MIL 0 -
Sep 20 vs MIL MIL 0 -
Sep 16 vs CIN CIN 0 -
Sep 14 @ MIL MIL 0 -
Sep 13 @ MIL MIL 2 -
Sep 10 @ SEA SEA 2 -
Sep 7 vs SF SF 1 -
Last 10 average 0.8

Walks Given

0.48 / game
(2025) avg
Date Opponent W Close
Sep 28 @ CHC CHC 0 -
Sep 24 @ SF SF 0 -
Sep 23 @ SF SF 0 -
Sep 21 vs MIL MIL 0 -
Sep 20 vs MIL MIL 1 -
Sep 16 vs CIN CIN 0 -
Sep 14 @ MIL MIL 1 -
Sep 13 @ MIL MIL 0 -
Sep 10 @ SEA SEA 1 -
Sep 7 vs SF SF 0 -
Last 10 average 0.3

Earned Runs Allowed

0.26 / game
(2025) avg
Date Opponent E. Run Close
Sep 28 @ CHC CHC 0 -
Sep 24 @ SF SF 1 -
Sep 23 @ SF SF 0 -
Sep 21 vs MIL MIL 0 -
Sep 20 vs MIL MIL 0 -
Sep 16 vs CIN CIN 0 -
Sep 14 @ MIL MIL 0 -
Sep 13 @ MIL MIL 3 -
Sep 10 @ SEA SEA 0 -
Sep 7 vs SF SF 0 -
Last 10 average 0.4

Riley O'Brien Game Logs

2025 Game Log
Date Opp Score M/L O/U S/R RES IP H R ER SO BB HR PIT P/IP G/F
Sep 28 @ CHC L 2 - 0 L 133 U 7.0 R ND 1.0 1 0 0 2 0 0 13 13.0 0.00
Sep 24 @ SF L 4 - 3 L -114 U 7.5 R L 1.0 2 1 1 0 0 0 16 16.0 0.00
Sep 23 @ SF W 9 - 8 W 182 O 7.5 R S 0.1 0 0 0 1 0 0 5 15.0 0.00
Sep 21 vs MIL W 5 - 1 W 115 U 8.5 R ND 1.0 0 0 0 0 0 0 15 15.0 0.50
Sep 20 vs MIL L 3 - 2 F/10 L 124 U 8.5 R ND 1.1 0 0 0 1 1 0 19 14.3 0.00
Sep 16 vs CIN W 3 - 0 W 107 U 8.0 R S 1.0 0 0 0 1 0 0 9 9.0 0.00
Sep 14 @ MIL W 3 - 2 W 167 U 8.5 R S 1.0 0 0 0 2 1 0 16 16.0 0.00
Sep 13 @ MIL L 9 - 8 F/10 L 157 O 7.5 R ND 0.0 2 3 3 0 0 0 18 0.0 0.00
Sep 10 @ SEA L 4 - 2 F/13 L 183 U 7.5 R ND 2.0 2 1 0 2 1 0 31 15.5 0.00
Sep 7 vs SF W 4 - 3 W -130 U 8.0 R S 1.0 1 0 0 0 0 0 11 11.0 0.00
Sep 6 vs SF W 3 - 2 W 108 U 8.5 R W 1.0 0 0 0 1 0 0 8 8.0 0.00
Aug 28 vs PIT W 4 - 1 W -115 U 8.5 R H 1.0 0 0 0 0 0 0 13 13.0 1.00
Aug 25 vs PIT W 7 - 6 W -125 O 8.0 R W 1.2 1 1 1 1 0 0 21 12.6 0.00
Aug 19 @ MIA W 7 - 4 W 124 O 7.5 R S 1.0 0 0 0 2 2 0 18 18.0 0.00
Aug 17 vs NYY L 8 - 4 L 134 O 8.5 R BS 1.2 1 0 0 2 0 0 24 14.4 0.50
Aug 13 vs COL L 6 - 5 L -218 O 8.0 R H 1.0 2 0 0 0 0 0 10 10.0 0.00
Aug 10 vs CHC W 3 - 2 W 120 U 7.5 R H 0.2 0 0 0 1 1 0 13 19.5 0.00
Aug 8 vs CHC W 5 - 0 W 151 U 8.5 R ND 1.0 0 0 0 0 0 0 9 9.0 0.00
Aug 6 @ LAD W 5 - 3 W 184 U 9.5 R S 1.1 0 0 0 0 1 0 20 15.0 3.00
Aug 4 @ LAD W 3 - 2 W 153 U 8.0 R W 1.0 1 1 1 0 0 0 6 6.0 0.00
Jul 30 vs MIA L 2 - 0 L -124 U 8.5 R ND 1.1 0 0 0 1 0 0 12 9.0 0.00
Jul 26 vs SD L 3 - 1 L -133 U 9.0 R ND 1.0 0 0 0 1 0 0 15 15.0 0.00
Jul 24 vs SD W 9 - 7 W -145 O 7.5 R H 0.1 1 0 0 1 1 0 13 39.0 0.00
Jul 22 @ COL L 8 - 4 L -161 P 12.0 R ND 1.0 1 1 0 1 2 0 31 31.0 2.00
Jul 20 @ AZ L 5 - 3 L 125 U 9.0 R ND 1.0 0 0 0 2 0 0 17 17.0 0.00
Jul 13 vs ATL W 5 - 4 W -152 O 8.0 R H 1.2 1 0 0 2 1 0 27 16.2 1.00
Jul 11 vs ATL L 6 - 5 L -111 O 9.0 R ND 2.0 2 0 0 4 1 0 38 19.0 1.00
Jul 6 @ CHC L 11 - 0 L 204 O 7.0 R ND 2.0 2 0 0 3 0 0 39 19.5 0.50
Jul 2 @ PIT L 5 - 0 L -121 U 7.5 R ND 0.2 2 1 1 1 1 0 20 30.0 0.00
Jun 29 @ CLE W 7 - 0 W -105 U 8.0 R ND 1.0 0 0 0 3 2 0 26 26.0 0.00
Jun 26 vs CHC L 3 - 0 L 117 U 9.0 R ND 1.0 0 0 0 1 1 0 16 16.0 0.00
Jun 23 vs CHC W 8 - 2 W 108 O 9.0 R ND 1.0 1 0 0 0 0 0 19 19.0 1.00
Jun 20 vs CIN W 6 - 1 W -137 U 8.5 R ND 0.2 0 0 0 2 1 0 13 19.5 0.00
Jun 19 @ CHW W 8 - 6 F/10 W -161 O 9.0 R ND 1.0 0 0 0 1 0 0 14 14.0 0.00
Jun 17 @ CHW W 12 - 2 W -122 O 9.0 R ND 2.0 1 0 0 1 0 0 25 12.5 1.00
Jun 13 @ MIL L 3 - 2 L 144 U 7.5 R ND 1.0 0 0 0 1 0 0 17 17.0 1.00
Jun 11 vs TOR L 5 - 2 L -131 U 8.5 R ND 2.0 2 0 0 1 1 0 26 13.0 0.00
Jun 9 vs TOR L 5 - 4 F/10 L -117 O 8.5 R ND 2.0 3 1 1 0 0 1 22 11.0 0.00
Jun 5 vs KC W 6 - 5 F/10 W -121 O 8.0 R ND 1.2 1 0 0 1 0 0 25 15.0 0.00
May 1 @ CIN L 9 - 1 L -114 O 9.0 R ND 1.2 1 3 3 2 1 1 34 20.4 0.00
Apr 28 @ CIN L 3 - 1 L 108 U 9.5 R ND 0.2 2 0 0 0 1 0 12 18.0 0.00
Apr 26 vs MIL W 6 - 5 W -141 O 7.0 R H 0.1 0 0 0 0 0 0 2 6.0 0.00
Show Full Season

Riley O'Brien's Pitching Statistics for Regular Season

Season Team G GS W L SV BS ERA CG SHO IP H R ER BB SO HR WP
2025 STL 42 0 3 1 6 3 2.06 0 0 48.0 33 13 11 20 45 2 3
2024 STL 8 0 0 0 0 1 11.25 0 0 8.0 13 10 10 8 11 2 1
2022 SEA 1 0 0 0 0 0 0.00 0 0 1.0 1 0 0 1 1 0 0
2021 CIN 1 1 0 1 0 0 13.50 0 0 1.3 2 2 2 3 2 2 0

Riley O'Brien's Pitching Statistics for Post Season

Season Team G GS W L SV BS ERA CG SHO IP H R ER BB SO HR WP

Pitching Splits

Overall Last 3 Away Home Day Night
W-L 3-1 0-1 1-1 2-0 0-0 3-1
ERA 2.06 3.86 3.92 0.66 0.00 2.06
IP 48.0 2.3 20.7 27.3 0.0 48.0
HITS 33 3 17 16 0 33
RUNS 13 1 11 2 0 13
ER 11 1 9 2 0 11
SO 45 3 24 21 0 45
BB 20 0 12 8 0 20
HR 2 0 1 1 0 2
OBP .302 .273 .344 .262 .000 .302
WHIP 1.10 1.29 1.40 0.88 0.00 1.10
GB:FB 3.56 0.00 4.00 3.22 0.00 3.56
SB 2 0 0 2 0 2
CS 1 0 0 1 0 1
SB% 2.00 0.00 0.00 2.00 0.00 2.00
QS% 0.00 0.00 0.00 0.00 0.00 0.00


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