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Riley O'Brien
Projections & Stats

STL

Player Information

TeamSTL PosRP Age31
ThrowsR $/Game3.5 RCL R%100
Razzball 2026 rest of season projections for Riley O'Brien of the St Louis Cardinals have him as the #159 ranked player and #17 relief pitcher (RP) worth $7.3 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 Days30000202.07100010.002.030.500.1674.54.50.00.014.30.04.6
Last 30 Days1000017010.048961775.405.331.600.2508.16.36.30.914.614.6-0.9
Season35003321135.31513015211343.823.361.160.2927.68.72.80.522.57.312.8
ROS Proj3200228032.01372813314323.563.611.300.2957.99.03.90.823.59.97.3

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$
Jun 30@ATLSV91.0491000000.003.111.0033.6
Jun 28MIASV91.03150000100.001.100.0041.4
Jun 22ARISV91.03170000000.003.100.0033.8
Jun 21@KC91.071222201118.0017.102.00-48.7
Jun 16SDSV91.04130001000.006.091.0033.6
Jun 13@MIN91.06310113109.0010.103.00-28.4
Jun 7CINSV91.04151000100.001.101.0041.2
Jun 6CINSV91.06232001100.004.103.0040.7
Jun 3TEXSV91.04130001000.006.101.0033.6
Jun 2TEXL91.073233312027.002.094.00-62.3
May 29CHCSV91.04141110009.003.061.0013.0
May 23@CINL101.36200101200.002.340.752.7
May 19PITBSV91.072222210018.0012.113.00-56.5
May 15KC91.03101000000.003.101.00-14.8
May 14@ATHSV91.04160000200.002.110.0048.9
May 12@ATHSV91.03130001000.006.121.0033.6
May 10@SDBSV91.053122203118.0010.112.00-33.7
May 7@SDSV91.03100000100.001.140.0041.4
May 4MILSV90.7230000000.000.000.0031.4
May 2LADSV91.072642202018.00-0.854.006.7
Apr 29@PITSV91.04111000100.001.121.0041.2
Apr 25SEAL+BSV81.093942211018.007.155.00-99.9
Apr 21@MIASV91.04171000100.001.141.0041.2
Apr 19@HOUW+BSV81.35191000200.000.130.752.7
Apr 18@HOUSV90.7270000100.000.000.0039.0
Apr 15CLESV91.03150000200.00-0.850.0048.9
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
2026STL35003321115135.03015211343.823.361.160.2920.52.88.712.8

Riley O'Brien Stats | Monthly

Riley O'Brien 2026 fantasy value by month for 5x5 leagues.
GGSQSWLSVHLDIPHERKBBERAFIPWHIPBABIPH/9K/9BB/9HR/9$$/G$
April1200217012.0821511.501.280.750.2766.011.30.80.023.88.9
May90001509.0961036.004.251.330.3489.010.03.01.0-2.6-4.4
June90001609.086776.005.591.670.2508.07.07.01.0-3.9-5.2

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

$Point Shares$W$$SV$$ERA$$WHIP$$K$Pos RkTot Rk
MLB 10 ESPN5.5-0.30.43.20.40.10.417155
MLB 10 Y!5.5-0.30.43.20.40.10.417155
MLB 12 ESPN7.30.50.45.10.40.00.417159
MLB 12 Y!7.30.50.45.10.40.00.417158
MLB 14 ESPN8.81.60.46.60.40.00.417169
MLB 14 Y!8.81.60.46.60.40.00.417169
MLB 15 ESPN9.22.20.47.00.40.00.417176
MLB 15 Y!9.22.20.47.00.40.00.417176
MLB 16 ESPN9.82.60.47.40.40.10.517182
MLB 16 Y!9.82.60.47.40.40.10.517184
AL 10
NL 109.92.5-0.18.60.00.10.310113
AL 12
NL 1211.54.2-0.110.20.00.10.310122

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 126.00.60.63.40.50.00.50.00.01868
6x6 (QS) Y! 126.00.60.63.40.50.00.50.00.01868
6x6 (Holds) ESPN 124.1-0.60.813.40.7-0.10.70.0-12.42587
6x6 (Holds) Y! 124.1-0.60.813.40.7-0.10.70.0-12.42587
7x7 ESPN 12-0.3-1.00.415.00.40.00.40.0-17.531108
7x7 Y! 12-0.3-1.00.415.00.40.00.40.0-17.531108

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: