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Riley O'Brien

Riley O'Brien

RP • St. Louis Cardinals Proj Rank 16 Actual 76 268 ADP • Trade Value
IP ERA W-L HLD SV K/BB K/9 WHIP FSP
52.1 4.13 3-6 1 34 54/23 9.3 1.28 8.91
Compared to same point last season
32.21.932-06235/179.61.29

Riley O'Brien | Fantasy Outlook

Riley O'Brien maintains a firm grip on closing duties despite recent ratio turbulence

O'Brien has encountered some turbulence in recent weeks, posting a 6.12 ERA and 1.46 WHIP over his past 30 days despite securing a save in his latest outing. The third-place Cardinals (68-70), currently looking to snap a two-game skid, continue to rely on the All-Star righty as their undisputed primary closer amidst several bullpen injuries.

His bloated 14.65 ERA across his last six appearances is inflated by a couple of tough outings, but his season-long profile remains sturdy with 34 saves and 54 strikeouts in 52.1 innings. While our projections anticipate occasional ratio hiccups given his 1.29 WHIP, his established ninth-inning role and velocity make this recent rough stretch more of a temporary blip than a long-term concern.

The Cardinals embark on a six-game road trip this week, opening with a tough series against the first-place Dodgers before heading into altitude against the Rockies. Our models project around 1.5 saves and two strikeouts over 2.1 innings, giving him plenty of scoring opportunities if St. Louis generates late leads. Start.

Updated 1 day ago

Riley O'Brien Fantasy

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DATE OPP INN PC K WLK ER DEC ERA WHIP PTS
08/27 BAL 1.0 11 1 0 0 SAVE 4.13 1.28 8
08/26 BAL 1.0 17 0 0 1 LOSS 4.21 1.29 -5
08/23 @PHI 0.2 39 0 1 6 LOSS 4.11 1.27 -13
08/20 @CIN 0.1 15 0 2 0 SAVE 2.94 1.12 4
08/18 @CIN 1.0 13 1 0 0 SAVE 2.96 1.06 8
08/17 @CIN 1.0 14 3 0 0 SAVE 3.02 1.09 10
08/15 @CHC 1.0 14 0 0 0 N/A 3.08 1.11 2
08/11 PHI 1.0 8 1 0 0 SAVE 3.14 1.13 8
08/09 COL 1.0 8 0 0 0 SAVE 3.21 1.15 7
08/07 COL 1.0 14 0 1 0 SAVE 3.28 1.18 7
08/05 @NYY 1.0 22 1 1 0 SAVE 3.35 1.18 8
08/02 @TOR 1.0 18 1 0 0 N/A 3.43 1.19 3
07/30 CHC 1.0 17 1 0 0 N/A 3.50 1.19 3
07/29 CHC 1.0 18 1 1 0 N/A 3.59 1.22 3
07/22 @LAA 1.0 26 3 2 0 SAVE 3.67 1.22 9
07/20 @LAA 0.1 21 1 1 2 LOSS 3.76 1.20 -7
07/17 @ARI 1.0 16 1 1 0 SAVE 3.35 1.14 7
07/11 ATL 1.0 18 1 1 0 SAVE 3.43 1.12 8
07/10 ATL 1.0 12 2 0 0 SAVE 3.52 1.12 9
07/08 MIL 1.0 15 1 0 0 N/A 3.62 1.15 3
07/04 @CHC 1.0 13 1 1 0 SAVE 3.72 1.16 8
06/30 @ATL 1.0 9 0 0 0 SAVE 3.82 1.16 7
06/28 MIA 1.0 15 1 0 0 SAVE 3.93 1.17 8
06/22 ARI 1.0 17 0 0 0 SAVE 4.05 1.20 7
06/21 @KC 1.0 12 1 0 2 N/A 4.18 1.24 0
06/16 SD 1.0 13 0 1 0 SAVE 3.73 1.21 7
06/13 @MIN 1.0 31 1 3 1 N/A 3.86 1.22 1
06/07 CIN 1.0 15 1 0 0 SAVE 3.68 1.16 8
06/06 CIN 1.0 23 1 1 0 SAVE 3.81 1.16 7
06/03 TEX 1.0 13 0 1 0 SAVE 3.95 1.10 7
06/02 TEX 1.0 32 2 1 3 LOSS 4.10 1.10 -6
05/29 CHC 1.0 14 0 0 1 SAVE 3.20 0.99 6
05/23 @CIN 1.1 20 2 1 0 LOSS 2.96 0.99 -1
05/19 PIT 1.0 22 0 1 2 N/A 3.13 1.00 -2
05/15 KC 1.0 10 0 0 0 N/A 2.45 0.91 2
05/14 @ATH 1.0 16 2 0 0 SAVE 2.57 0.90 9
05/12 @ATH 1.0 13 0 1 0 SAVE 2.70 0.95 7
05/10 @SD 1.0 31 3 0 2 N/A 2.84 0.95 2
05/07 @SD 1.0 10 1 0 0 SAVE 2.00 0.89 8
05/04 MIL 0.2 3 0 0 0 SAVE 2.12 0.94 6
05/02 LAD 1.0 26 2 0 2 SAVE 2.20 0.98 5
04/29 @PIT 1.0 11 1 0 0 SAVE 1.17 0.78 8
04/25 SEA 1.0 39 1 1 2 LOSS 1.26 0.77 -7
04/21 @MIA 1.0 17 1 0 0 SAVE 0.00 0.45 8
04/19 @HOU 1.1 19 2 0 0 WIN 0.00 0.41 9
04/18 @HOU 0.2 7 1 0 0 SAVE 0.00 0.36 7
04/15 CLE 1.0 15 2 0 0 SAVE 0.00 0.39 9
04/14 CLE 1.0 15 1 0 0 WIN 0.00 0.43 8
04/10 BOS 1.0 8 1 0 0 SAVE 0.00 0.48 8
04/08 @WAS 1.0 15 0 0 0 N/A 0.00 0.55 2
04/07 @WAS 1.0 16 2 0 0 SAVE 0.00 0.63 9
04/05 @DET 1.0 13 1 0 0 SAVE 0.00 0.75 8
04/01 NYM 1.0 16 2 0 0 N/A 0.00 0.92 4
03/31 NYM 1.0 11 0 0 0 SAVE 0.00 0.90 7
03/28 TB 1.0 9 0 0 0 HOLD 0.00 1.29 1
03/26 TB 1.1 17 2 0 0 WIN 0.00 0.75 9
Totals: 52.1922542324 261
Fantasy Chart Loading...
YEAR TM APP INN PC K WLK SV W-L ERA WHIP K/9 PTS
2021 CIN 1 2.0 42 2 3 0 0-1 9 2.5 9 -5
2022 SEA 1 1.0 23 1 1 0 0-0 0 2 9 2
2024 STL 8 8.0 194 11 8 0 0-0 11.25 2.5 12.4 7
2025 STL 42 43.1 758 45 22 6 3-1 2.28 1.27 9.4 142
2026 STL 56 52.1 922 54 23 34 3-6 4.13 1.28 9.3 261
ON PACE 65 62 1082 63 27 39 3-7 4.13 1.28 9.3 306
3-YEAR AVG 25 25 476 28 15 3 2-1 3.86 1.48 9.8 75
Career 108 104.1 1939 113 57 0 0-0 4.05 1.43 9.8

O'Brien Projection

View All
ERA WHIP SAVES HOLDS WINS SO K/BB K/9 SVHD IP LOSSES PC FPTS
6.558 1.629 1.4 0 0 1.9 1.5 7.9 1.4 2.1 0.5 43 7.75
ERA WHIP SAVES HOLDS WINS SO K/BB K/9 SVHD IP LOSSES PC FPTS
2.363 0.563 0.6 0 0 0.8 1.5 7.9 0.6 2.2 0.2 17.2 3.1
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OWN START TRENDS

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Depth Chart

St. Louis Cardinals

Roster Breakdown
NAME OWN START
Rainiel Rodriguez 1% 0%
Leo Bernal 1% 1%
NAME OWN START
Alec Burleson 100% 85%
Blaze Jordan 3% 1%
Ramon Urias 2% 0%
NAME OWN START
JJ Wetherholt 93% 32%
Masyn Winn 16% 7%
NAME OWN START
Jordan Walker 100% 82%
Ivan Herrera 94% 76%
Joshua Baez 39% 20%
Nathan Church 6% 3%
Jose Fermin 3% 2%
NAME OWN START
Kyle Leahy 58% 35%
Michael McGreevy 35% 18%
Andre Pallante 32% 3%
Matthew Liberatore 16% 7%
Quinn Mathews 8% 3%
Hunter Dobbins 3% 1%
Liam Doyle 2% 0%
NAME OWN START
Riley O'Brien 84% 74%
Ryne Stanek 8% 6%
George Soriano 6% 5%
Matt Svanson 1% 0%

Team Rankings

AVG
.240
20th
R
610
17th
HR
143
21st
RBI
593
15th
SB
87
17th
OBP
.315
20th
SLG
.381
27th
OPS
.696
25th
W
68
18th
SV
40
7th
ERA
4.24
20th
WHIP
1.34
20th
QS
47
13th
TeamW-LWin %GBRSRA
BrewersBrewers85-53.616-686523
CubsCubs78-60.5657742601
CardinalsCardinals68-70.49317610625
PiratesPirates67-71.48618669643
RedsReds65-73.47120570683

Team Stats

PlayerGPABRHHRRBISBAVGO/S
Jimmy Crooks5213410245140.179  
Pedro Pagés7617713374112.209  
PlayerGPABRHHRRBISBAVGO/S
Alec Burleson13752178150211004.288  
PlayerGPABRHHRRBISBAVGO/S
JJ Wetherholt13050588122174814.242  
PlayerGPABRHHRRBISBAVGO/S
Nolan Gorman6821921418270.187  
Ramón Urías32731311370.151  
Blaze Jordan5818616463280.247  
César Prieto123112000.065  
PlayerGPABRHHRRBISBAVGO/S
Masyn Winn1224324910355110.238  
PlayerGPABRHHRRBISBAVGO/S
Jordan Walker13452286149279718.285  
Nathan Church118352438410469.239  
José Fermín9927524666347.240  
Everson Pereira389810235121.235  
Joshua Báez1654795102.167  
Bryan Torres5912515334182.264  
Victor Scott II611551930299.194  
Thomas Saggese34811117141.210  
PlayerGPABRHHRRBISBAVGO/S
Iván Herrera1375148212514558.243  
PlayerGPWLSVIPSOERAWHIPO/S
Matthew Liberatore275130134.21415.411.47  
Kyle Leahy261040129.11183.131.31  
Michael McGreevy26590142.1983.861.25  
Andre Pallante241260136.0973.571.24  
Hunter Dobbins1133154.0523.671.35  
Quinn Mathews412019.2205.031.58  
Brycen Mautz20106.0109.002.00  
Max Rajcic60009.085.001.33  
Bruce Zimmermann10005.025.401.40  
PlayerGPWLSVIPSOERAWHIPO/S
Riley O'Brien56363454.2543.951.23  
Ryne Stanek6022253.1564.391.39  
George Soriano6163259.0584.121.27  
Caleb Ferguson3510133.0315.181.70  
Gordon Graceffo5471168.1452.901.05  
JoJo Romero4413043.0433.351.30  
Justin Bruihl6001066.1443.391.37  
Jared Shuster50009.049.001.89  
Matt Svanson4123043.1417.271.75  
Peter Strzelecki811014.085.791.36  
Ryan Fernandez1512020.1253.981.33  
Matt Pushard60007.065.141.43  
Cade Winquest10002.020.000.50  
Luis Gastelum2243025.0325.041.16  

Owned Breakdown

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Schedule

DATE OPP SCORE MATCHUP
09-01 @LAD10:10 EDTMichael McGreevy
Eric Lauer
09-02 @LAD10:10 EDT
Yoshinobu Yamamoto
09-03 @LAD10:10 EDTQuinn Mathews
Tarik Skubal
09-04 @COL08:40 EDTKyle Leahy
Ryan Feltner
09-05 @COL08:10 EDTMatthew Liberatore
Mason Adams
09-06 @COL03:10 EDTMichael McGreevy
Tanner Gordon

Player Timeline

Jul 7th

Riley O’Brien Added to NL All-Star Roster for Cardinals

Apr 18th

Riley O’Brien locks down save with 100.5 mph strikeout of Yordan Alvarez ...

Player News

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  • Luis Robert Jr. CF • BAL MLB

    Orioles Add Luis Robert Jr. on Waiver Claim After Previous Trade Talks with White Sox

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    @bepryor

  • Caleb Williams QB • CHI

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    Chicago Sun-Times

  • Kyler Gordon DB • CHI

    Halas Intrigue Bears podcast: Is Kyler Gordon done?

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  • Joey Porter CB • PIT

    Joey Porter Jr. Says First Contract Negotiation Has Been Challenging but Supported by Steelers Teammates and Coaches

    @bepryor

  • Max Brosmer QB •

    Vikings Re-Sign QB Max Brosmer to Practice Squad After Clearing Waivers

    @TomPelissero

  • Jon Weeks LS • SF

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    @LombardiHimself

  • Isiah Pacheco RB • DET

    Chiefs RB Isiah Pacheco Placed on IR, Out at Least Four Games

    @UnderdogNFL

  • Bryce Eldridge 1B • SF

    Giants Reveal Starting Lineup vs. Pirates: Logan Webb Starts, Rafael Devers at First Base

    @susanslusser

  • Christian Franklin CF • BAL

    Christian Franklin Placed on IL with Left-Hand Inflammation After Swing-and-Miss Reaction

    @jcalvinmeyer

  • Luis Robert Jr. CF • BAL

    Orioles Add Luis Robert Jr. on Waiver Claim After Previous Trade Talks with White Sox

    @jcalvinmeyer

  • Luis Robert Jr. CF • BAL

    Orioles Owner David Rubenstein Approves $5M Waiver Claim for Luis Robert Jr.

    @jcalvinmeyer

  • Tarik Skubal SP • LAD

    Tigers’ Record Highlights Major Impact of Tarik Skubal’s Availability: 40–33 With Him, 23–41 Without Him

    @Buster_ESPN

  • Dylan Ross RP • NYM

    Mets Recall Morabito and Ross; Hagenman to Start Tomorrow

    @NYPost_Mets

  • Bam Adebayo C • MIA

    OG Anunoby’s MSG Game-Winner Named 2025–26 NBA Clutch Moment of the Year

    @NBA

  • Stephen Curry PG • GS

    Stephen Curry’s 11-Minute Highlight Reel of No-Look Threes

    @warriors

  • Jalen Duren C • DET

    Lakers could've helped Pistons avoid Jalen Duren disaster that's still in play

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  • Bam Adebayo C • MIA

    Luka Dončić Wins 2025–26 NBA ID Fan Favorite Handle of the Year

    @NBA

  • Nick Richards C • MIA

    Nick Richards Aims to Prove Heat Wrong After Being Overlooked

    @IraHeatBeat

  • Bam Adebayo C • MIA

    Luke Kornet’s Chase-Down Block Named 2025–26 NBA Fan Favorite Block of the Year

    @NBA

  • Claude Giroux RW • OTT

    Claude Giroux’s Hall of Fame Case Gains Momentum Ahead of NHL Opening Night

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  • Gabe Smith C •

    Utah Mammoth Announces Rookie Camp Roster; Desnoyers Returns After Summer Injury

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    Canucks Coaching Staff Set Standards Ahead of New NHL Season

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  • Nils Lundkvist D • DAL

    Nils Lundkvist Emerges as an Impact Defenseman for Dallas Despite Early Injury

    @DallasStars

  • Jake Livanavage D • PIT

    Jake Livanavage Adds 15 Pounds Ahead of NHL Prospect Tournament

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  • Nick Suzuki C • MON

    Nick Suzuki’s Golf Tournament Raises $157,035 for Service Dogs and Mental Health Support

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Waiver Trends

More Trends
Randy Vasquez SD SP +12.1
Lazaro Montes SEA RF +7.4
Coby Mayo BAL 3B +7.4
Eric Lauer LAD SP +7.3
Hector Rodriguez CIN RF +6.5
Heriberto Hernandez MIA LF +6.0
Randy Dobnak KC SP +6.0
Andrew Painter PHI SP +5.9
Bryce Eldridge SF 1B +5.2
Ethan Salas SD C +4.5
Hayden Wesneski HOU SP +4.3
Sam Antonacci CHW LF +4.1
Daylen Lile WAS LF +4.1
Peter Lambert HOU SP +4.0
Mason Montgomery PIT RP +3.8
Zac Thornton NYM SP -5.9
Dustin May MIL SP -5.7
Pedro Ramirez CHC 2B -5.4
Tyler Mahle ATL SP -4.8
Kade Anderson SEA SP -4.6
Trent Grisham NYY CF -3.3
Chris Bassitt BAL SP -3.2
Royce Lewis MIN 1B -3.2
George Lombard Jr. NYY SS -3.1
Janson Junk MIA SP -3.0
Caleb Durbin BOS 3B -3.0
Emerson Hancock SEA SP -2.9
Alec Bohm PHI 3B -2.8
Michael McGreevy STL SP -2.8
Matthew Liberatore STL SP -2.8