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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 Trade Value

Trade value on the open market is 9.78 which ranks him 23rd among relief pitcher's and 151st overall. His maximum trade value within the past 60 days is 17.15.

Calculating Trade Value

We calculate trade values by evaluating the performance of all relief pitcher's across dozens of stat categories including how their performance has stacked up to expectations and their projected outlook. Ratings are constantly updated on a daily basis.

Get a full overview of trade values broken down by position.

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We offer trade suggestions inside the Fantasy Assistant to see what you could get in return for trading away Riley O'Brien.

Simply add your team needs based on position and add players to the trading block and we will formulate trade suggestions for you.

Should I Trade Riley O'Brien?

Similar rated players across all positions.

Name Rating
Nico Hoerner CHC 2B9.82
Zack Wheeler PHI SP9.80
Ian Happ CHC LF9.80
Isaac Paredes HOU 3B9.79
Riley O'Brien STL SP9.78
George Springer TOR RF9.72
Hector Rodriguez RF9.72
Gregory Soto PIT SP9.71
Trea Turner PHI SS9.69

Relief Pitcher Similar in Value

Name Rating
Carlos Vargas SEA9.69
Alec Gamboa BOS9.69
Adrian Morejon SD9.65
Aaron Ashby MIL9.61
Gregory Soto PIT9.24
Riley O'Brien STL8.91

Riley O'Brien Trade Value Over Time


Date Rating
Sep 1st8.91
Aug 31st6.78
Aug 30th6.96
Aug 29th9.78
Aug 28th9.87
Aug 27th9.47
Aug 26th8.46
Aug 25th10.89
Aug 24th10.53
Aug 23rd11.13
Aug 22nd11.87
Aug 21st11.43
Aug 20th14.63
Aug 19th17.15
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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 57% 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

  • Bradyn Swinson LB • NFL

    Steelers Complete Practice Squad With Three Signings, No Elandon Roberts

    @MikeDeFabo

  • Jalen Hurts QB • PHI NFL

    Jalen Hurts Addresses Criticism Over His Reserved Personality in GQ Interview

    @ByKimberleyA

  • A.J. Brown WR • NE NFL

    Jalen Hurts Acknowledges He and A.J. Brown Grew Apart Before Eagles Trade

    @ByKimberleyA

  • Aaron Donald DT • LAR NFL

    Aaron Donald More Likely to Debut in Week 2 or 3; Week 1 Still Possible

    @UnderdogNFL

  • Erick Hunter LB • NFL

    Patriots Sign Former Lions Linebacker Erick Hunter After Strong Preseason on Special Teams

    @davebirkett

  • Kaden Davis WR • CHI NFL

    Bears WR Kaden Davis Switches to No. 80 on Practice Squad

    @patrickfinley

  • Bradyn Swinson LB •

    Steelers Complete Practice Squad With Three Signings, No Elandon Roberts

    @MikeDeFabo

  • Jalen Hurts QB • PHI

    Jalen Hurts Addresses Criticism Over His Reserved Personality in GQ Interview

    @ByKimberleyA

  • A.J. Brown WR • NE

    Jalen Hurts Acknowledges He and A.J. Brown Grew Apart Before Eagles Trade

    @ByKimberleyA

  • Aaron Donald DT • LAR

    Aaron Donald More Likely to Debut in Week 2 or 3; Week 1 Still Possible

    @UnderdogNFL

  • Erick Hunter LB •

    Patriots Sign Former Lions Linebacker Erick Hunter After Strong Preseason on Special Teams

    @davebirkett

  • Kaden Davis WR • CHI

    Bears WR Kaden Davis Switches to No. 80 on Practice Squad

    @patrickfinley

  • Sean Burke SP • CHW

    Astros Announce Lineup Against White Sox Starter Sean Burke

    @Chandler_Rome

  • Jackson Flora P • SF

    Giants’ Top Pick Jackson Flora Set for First Class-A Start; September Call-Up Hints Emerge

    @susanslusser

  • CJ Abrams SS • WAS

    Nationals’ Abrams, Wood Set for Action; Kent Receives Extra Rest

    @MarkZuckerman

  • Jesus Rodriguez C • SF

    Giants Updates: Marcelo Mayer Continues Rehab; Jesús Rodríguez Seeks Second Elbow Opinion

    @PavlovicNBCS

  • Jake Meyers CF • HOU

    Astros Call Up Ronel Blanco and Jake Meyers for September

    @Chandler_Rome

  • Lazaro Montes RF • SEA

    Lázaro Montes Set to Make MLB Debut for the Mariners

    @RyanDivish

  • 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

    Piston Powered

  • 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

  • Matthew Mayich D •

    Attorney Says Injured Hockey Player Matthew Mayich Has No Chance of Recovery, Criticizes Arizona State’s Response

    @JeffMarek

  • Claude Giroux RW • OTT

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

    @JFreshHockey

  • Gabe Smith C •

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

    @BagleyKSLsports

  • Manny Malhotra HC • VAN

    Canucks Coaching Staff Set Standards Ahead of New NHL Season

    @Canucks

  • 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

    @penguins

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
Chris Bassitt BAL SP -3.8
Trent Grisham NYY CF -3.3
Royce Lewis MIN 1B -3.2
George Lombard Jr. NYY SS -3.1
Caleb Durbin BOS 3B -3.0
Janson Junk MIA SP -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