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Riley O'Brien
Projections & Stats

STL

Player Information

TeamSTL PosRP Age31
ThrowsR $/Game3.3 RCL R%83
Razzball 2026 rest of season projections for Riley O'Brien of the St Louis Cardinals have him as the #234 ranked player and #25 relief pitcher (RP) worth $1.6 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 Days40010204.013000040.001.780.000.0000.09.00.00.030.80.022.9
Last 30 Days90020419.332400090.001.420.430.1823.98.70.00.028.10.020.8
Season90020419.332400090.001.550.430.1823.98.70.00.028.10.040.5
ROS Proj5800339758.02474922525603.453.481.280.2937.69.33.90.824.210.21.6

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$
Apr 14CLEW101.03150000100.001.160.0020.2
Apr 10BOSSV91.0380000100.001.150.0041.4
Apr 8@WSH91.03150000000.003.180.00-14.6
Apr 7@WSHSV101.04160100200.002.150.0048.9
Apr 5@DETSV91.03130000100.001.200.0041.4
Apr 1NYM91.04161000200.00-0.831.000.2
Mar 31NYMSV91.03110000000.003.200.0033.8
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
2026STL9002041329.0400090.001.550.430.1820.00.08.740.5

Riley O'Brien Stats | Monthly

Riley O'Brien 2026 fantasy value by month for 5x5 leagues.
GGSQSWLSVHLDIPHERKBBERAFIPWHIPBABIPH/9K/9BB/9HR/9$$/G$
April60010306.010700.001.200.170.0831.510.50.00.026.39.6

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

$Point Shares$W$$SV$$ERA$$WHIP$$K$Pos RkTot Rk
MLB 10 ESPN-1.8-1.20.4-4.00.40.10.325237
MLB 10 Y!-1.8-1.20.4-4.00.40.10.325236
MLB 12 ESPN1.6-0.90.3-0.60.40.20.325234
MLB 12 Y!1.6-0.90.3-0.60.40.20.325234
MLB 14 ESPN3.7-0.30.41.30.40.20.425246
MLB 14 Y!3.7-0.30.41.30.40.20.425247
MLB 15 ESPN4.40.00.41.90.50.20.425254
MLB 15 Y!4.40.00.41.90.50.20.425255
MLB 16 ESPN4.80.30.42.30.50.20.425265
MLB 16 Y!4.80.30.42.30.50.20.425267
AL 10
NL 104.00.30.02.70.00.10.215164
AL 12
NL 125.71.4-0.14.50.00.10.216182

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 122.5-0.90.6-0.30.60.20.40.00.02592
6x6 (QS) Y! 122.5-0.90.6-0.30.60.20.40.00.02592
6x6 (Holds) ESPN 12-1.8-1.50.60.20.80.30.40.0-5.136114
6x6 (Holds) Y! 12-1.8-1.50.60.20.80.30.40.0-5.136114
7x7 ESPN 12-4.8-1.70.3-0.70.40.10.20.0-6.138123
7x7 Y! 12-4.8-1.70.3-0.70.40.10.20.0-6.138123

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: