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Riley O'Brien
Projections & Stats

STL

Player Information

TeamSTL PosRP Age31
ThrowsR $/Game2.0 RCL R%21
Razzball 2026 rest of season projections for Riley O'Brien of the St Louis Cardinals have him as the #201 ranked player and #24 relief pitcher (RP) worth $5.2 in standard 12 team 5x5 mixed leagues for fantasy baseball.

Jump to: Season Stats || Monthly Stats || Game Log || Player Rater || 2026 Fantasy Outlook
Grey Albright's 2026 Player Summary

Riley O'Brien Stats

GGSQSWLSVHLDIPTBFHERHRBBKERAFIPWHIPBABIPH/9K/9BB/9HR/9K%BB%$
Last 7 Days
Last 30 Days10000001.04100020.00-0.971.000.5009.018.00.00.050.00.0-9.7
Season4200316648.02003311222452.063.611.150.2526.28.44.10.422.511.0-2.9
ROS Proj57000031156.7227233.600.0

Riley O'Brien 2026 Projections | Preseason

GGSQSWLSVHLDIPTBFHERKBBERAFIPWHIPK/9BB/9HR/9K%BB%$All Rank
Preseason (Grey)11354.0503.411.308.31.0261
Preseason (Steamer)650033151664.8277562766283.723.621.299.13.80.823.710.05.2201
Prospectonator

Riley O'Brien Projections | Streamonator (Subscribe/login to see pitcher projections)

Riley O'Brien daily MLB projections and fantasy value for probable starts in next 7-10 days. LU=Lineup. If the lineup has been released and incorporated into the projections, it is listed as "Live".

Riley O'Brien Projections | DFS (Subscribe to see DFS MLB projections)

Riley O'Brien daily fantasy baseball projections for DFS sites such as DraftKings and FanDuel. LU=Lineup. If the lineup has been released and incorporated into the projections, it is listed as "Live".

Riley O'Brien Trade Value | Try our free Fantasy Baseball Trade Analyzer to evaluate trade offers.

Riley O'Brien Game Log | Games Started

OPPDECIPBFPCHRERBBKERAFIPWHIPBABIPHRProj $Act $

Riley O'Brien Game Log | Last 30 Day Relief Appearances

OPPDECIPStartIPBFPCHRERBBKHRERAFIPWHIP$

Riley O'Brien Stats | Season

Riley O'Brien stats and 5x5 fantasy value from 2013-2026.
PeriodTeamGGSQSWLSVHLDBFIPHERHRBBKERAFIPWHIPBABIPHR/9BB/9K/9$
2013 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2014 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2015 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2016 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2017 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2018 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2019 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2020 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2021CIN11001001.02223213.5026.423.7513.520.313.5-14.8
2022SEA100000051.0100110.004.112.000.3330.09.09.0-15.1
2023 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
2024STL8000000468.01310281111.257.042.630.4782.39.012.4-18.4
2025STL4200316620048.03311222452.063.611.150.2520.44.18.4-2.9
2026 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

Riley O'Brien Stats | Monthly

Riley O'Brien 2026 fantasy value by month for 5x5 leagues.
GGSQSWLSVHLDIPHERKBBERAFIPWHIPBABIPH/9K/9BB/9HR/9$$/G$
April20000011.020010.006.033.000.5009.90.09.00.0-13.6-15.8
May10000001.7132116.1712.011.200.0005.410.85.45.4-12.6-24.9
June1000000013.3811150.683.480.980.2195.47.43.40.7-1.8-3.5
July900000211.0911660.822.031.360.3337.413.14.90.0-4.9-6.0
August900202310.352641.743.610.870.1724.45.23.50.05.63.8
September1100114010.7841053.383.401.220.2766.88.44.20.03.5-1.0

Riley O'Brien Fantasy Baseball | Rest of Season Player Rater

$Point Shares$W$$SV$$ERA$$WHIP$$K$Pos RkTot Rk
MLB 10 ESPN0.00.0-0.15.81.2156457
MLB 10 Y!0.00.0-2.30.10.439976
MLB 12 ESPN5.20.20.33.40.4-0.10.224201
MLB 12 Y!0.00.0-2.60.40.540303
MLB 14 ESPN0.00.00.07.61.5175523
MLB 14 Y!0.00.0-2.30.90.760409
MLB 15 ESPN7.21.50.34.90.40.20.425208
MLB 15 Y!0.00.0-2.21.00.865502
MLB 16 ESPN0.00.00.010.91.7172516
MLB 16 Y!0.00.0-2.41.20.9661122
AL 10
NL 100.05.81.51698
AL 12
NL 120.05.91.51696

Riley O'Brien Fantasy Baseball | Rest of Season Player Rater (non-standard 5x5)

$Point Shares$W$$SV$$ERA$$WHIP$$K$$QS$$HLD$Pos RkTot Rk
6x6 (QS) ESPN 120.05.71.20.00.01764
6x6 (QS) Y! 12-2.00.30.4-0.10.01802
6x6 (Holds) ESPN 120.0-2.10.50.00.31242
6x6 (Holds) Y! 12-1.90.80.30.00.61521
7x7 ESPN 120.0-3.30.20.00.01358
7x7 Y! 12-1.80.90.3-0.10.61692

Riley O'Brien Fantasy Baseball | Preseason Player Rater

$Point Shares$W$$SV$$ERA$$WHIP$$K$Pos RkTot Rk
MLB 10 ESPN2.9-0.60.31.60.3-0.40.124198
MLB 10 Y!5.10.20.43.40.4-0.30.224152
MLB 12 ESPN5.20.20.33.40.4-0.10.224201
MLB 12 Y!5.70.60.44.10.4-0.30.124163
MLB 14 ESPN6.81.40.34.70.40.10.324210
MLB 14 Y!6.51.20.44.90.4-0.30.124185
MLB 15 ESPN7.22.00.35.10.40.10.324223
MLB 15 Y!6.61.60.45.20.4-0.40.025202
MLB 16 ESPN7.72.40.35.60.40.10.324229
MLB 16 Y!7.21.80.45.60.5-0.40.124209
AL 10
NL 107.12.10.06.00.00.00.113141
AL 12
NL 128.93.9-0.17.70.00.10.213145

Riley O'Brien Fantasy Baseball | Preseason Player Rater (non-standard 5x5)

$Point Shares$W$$SV$$ERA$$WHIP$$K$$QS$$HLD$Pos RkTot Rk
6x6 (QS) ESPN 124.40.20.52.30.5-0.10.20.02483
6x6 (Holds) ESPN 124.40.20.52.30.5-0.10.20.02683
7x7 ESPN 127.70.21.07.20.6-1.10.10.0-1.11661

Riley O'Brien 2026 Projections | Preseason

GGSQSWLSVHLDIPTBFHERKBBERAFIPWHIPK/9BB/9HR/9K%BB%$All Rank
Preseason (Grey)11354.0503.411.308.31.0261
Preseason (Steamer)650033151664.8277562766283.723.621.299.13.80.823.710.05.2201
Prospectonator

Riley O'Brien Fantasy Outlook For 2026

Grey Albright Player Summary

Player data for Riley O'Brien maintained by | Updated: