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Riley O'Brien
Projections & Stats

STL

Player Information

TeamSTL PosRP Age31
ThrowsR $/Game2.3 RCL R%99
Razzball 2026 rest of season projections for Riley O'Brien of the St Louis Cardinals have him as the #190 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 Days10000001.09100020.00-0.971.000.4299.018.00.00.022.20.0-9.7
Season20010012.39300020.001.181.290.42911.77.80.00.022.20.013.7
ROS Proj640033161364.02725525527653.533.611.290.2957.79.13.80.724.010.05.1

Riley O'Brien 2026 Projections | Preseason

GGSQSWLSVHLDIPTBFHERKBBERAFIPWHIPK/9BB/9HR/9K%BB%$All Rank
Preseason (Grey)11354.0503.411.308.32.0256
Preseason (Steamer)650033151664.8277562766283.723.621.299.13.80.823.710.05.0204
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$
Mar 28TBHLD71.0492000000.002.892.00-15.1
Mar 26TBW71.35171000200.000.630.7529.9

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
2026STL200100192.0300020.001.181.290.4290.00.07.813.7

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 ESPN2.8-0.40.41.10.3-0.20.224185
MLB 10 Y!
MLB 12 ESPN5.20.20.33.30.40.00.224190
MLB 12 Y!
MLB 14 ESPN6.41.20.44.30.40.00.323202
MLB 14 Y!
MLB 15 ESPN6.51.80.44.70.4-0.20.224223
MLB 15 Y!
MLB 16 ESPN7.32.20.45.10.40.00.424227
MLB 16 Y!
AL 10
NL 107.02.0-0.15.80.00.10.214141
AL 12
NL 129.53.7-0.18.30.00.10.214145

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 124.40.20.62.20.5-0.10.20.00.02583
6x6 (QS) Y! 12
6x6 (Holds) ESPN 1210.20.00.6-0.20.70.10.30.07.71859
6x6 (Holds) Y! 12
7x7 ESPN 1210.90.00.3-1.10.30.00.20.010.21149
7x7 Y! 12

Riley O'Brien Fantasy Baseball | Preseason Player Rater

$Point Shares$W$$SV$$ERA$$WHIP$$K$Pos RkTot Rk
MLB 10 ESPN3.0-0.60.31.60.3-0.40.224195
MLB 10 Y!4.90.20.43.40.3-0.30.124149
MLB 12 ESPN5.00.20.33.40.3-0.20.224204
MLB 12 Y!5.60.60.44.10.4-0.40.124166
MLB 14 ESPN6.71.40.34.70.40.00.324208
MLB 14 Y!6.21.20.44.80.4-0.40.025185
MLB 15 ESPN7.12.00.35.10.40.00.324214
MLB 15 Y!6.51.50.45.20.4-0.50.026199
MLB 16 ESPN7.62.40.45.50.40.00.324228
MLB 16 Y!6.81.70.45.50.4-0.60.127211
AL 10
NL 107.22.00.06.10.00.00.113144
AL 12
NL 129.13.8-0.17.90.00.10.213150

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 124.20.20.52.30.5-0.30.20.02483
6x6 (Holds) ESPN 124.20.20.52.30.5-0.30.20.02883
7x7 ESPN 128.00.21.06.90.6-1.20.10.0-0.41356

Riley O'Brien 2026 Projections | Preseason

GGSQSWLSVHLDIPTBFHERKBBERAFIPWHIPK/9BB/9HR/9K%BB%$All Rank
Preseason (Grey)11354.0503.411.308.32.0256
Preseason (Steamer)650033151664.8277562766283.723.621.299.13.80.823.710.05.0204
Prospectonator

Riley O'Brien Fantasy Outlook For 2026

Grey Albright Player Summary

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