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Jack Flaherty or Kumar Rocker

Who Should I Start? - Week 13 • Start New
Jack Flaherty

Jack Flaherty

SPDetroit Tigers DET
Kumar Rocker

Kumar Rocker

SPTexas Rangers TEX
OR
🔓 EXPERT ANALYSIS

Owners starting Flaherty over Rocker

 
 
 
 
START BOTH START BENCH BOTH BN

Includes Detailed Projections

Outlook Jack Flaherty

Jack Flaherty flashes elite strikeout upside as he anchors a depleted Tigers rotation.

Flaherty has shown signs of life lately, posting a 2.70 ERA and 13 strikeouts over his last 10.0 innings. He serves as the staff anchor for the fifth-place Tigers, who are currently navigating major rotation injuries to Tarik Skubal and Casey Mize. Despite some rough outings earlier in the year, he remains locked into the primary starting slot.

While his current 5.54 ERA and 1.65 WHIP are painful, his underlying metrics paint a more promising picture, including an elite 11.53 K/9 rate. Our models expect positive regression toward his 4.11 projected ERA, and his high strikeout rate aligns closer to his strong 2024 form than his inflated early-season ratios suggest.

Flaherty is scheduled for one start this week on June 12 on the road against the first-place Guardians. He will face Tanner Bibee, who carries a 4.09 ERA, in a matchup that offers plenty of strikeout potential but some ratio risk. Given his current upward trajectory and high-strikeout floor, he is a viable starting option this week. Verdict: Start.

Updated 1 day ago

Latest News Jack Flaherty
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🔓 EXPERT ANALYSIS

Owners starting Rocker over Flaherty

 
 
 
 
START BOTH START BENCH BOTH BN

Includes Detailed Projections

Outlook Kumar Rocker

Former top prospect looks to build on electric stuff and secure rotation slot

Kumar Rocker enters the year looking to cement his role in the Texas starting rotation. Currently slated as a mid-rotation staple, the 26-year-old righty has struggled with consistency and health throughout his brief career, but his pure stuff remains electric. With several starting pitchers on the Rangers' injured list, Rocker will get every opportunity to secure a permanent rotation slot.

Our projections expect Rocker to handle 111.0 innings, pitching to a 4.30 ERA and a 1.30 WHIP. While those ratios are somewhat of a fantasy risk, his high-strikeout upside is very real, as our models forecast 95 strikeouts in that span. If he can refine his command and limit the walk rate, his career trajectory suggests he has the potential to beat these projected numbers, especially given his high-90s fastball and devastating slider.

For fantasy managers, Rocker represents a classic high-upside, high-risk option. He is not a safe floor play due to his injury history and ratio volatility, but his ability to rack up strikeouts makes him an appealing target in the late rounds of drafts for those looking to capture a potential breakout starter.

Updated 1 day ago

Latest News Kumar Rocker
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Performance Jack Flaherty
Fantasy Chart Loading...

ERA W-L HLD SV SO WLK WHIP GP
5.400-000711.401
Season stats based on the past 7 days

ERA W-L HLD SV SO WLK WHIP GP
3.551-1002241.383
Season stats based on the past 14 days
Performance Kumar Rocker
Fantasy Chart Loading...

ERA W-L HLD SV SO WLK WHIP GP
3.600-000511.401
Season stats based on the past 7 days

ERA W-L HLD SV SO WLK WHIP GP
1.640-000741.182
Season stats based on the past 14 days
Next Up Own/Start Comparison
OWN/START Jack Flaherty
OWN
46%
+5.61 compared to last week
START
32%
-0.1 compared to last week
OWN/START Kumar Rocker
OWN
16%
+2.38 compared to last week
START
 
7%
-1.02 compared to last week
Next Up Consensus Rankings
Expert Consensus Jack Flaherty
109th
Average Ranking of Fantasy Experts
Expert Consensus Kumar Rocker
Not Ranked
Average Ranking of Fantasy Experts
Next Up Player Breakdowns
Breakdown Jack Flaherty

    Overview

  • Experts rank this player at 110th among SP's. Based on his stats from the past 60 days, he is currently ranked 125th.
  • The current leader among SP's is Cristopher Sanchez
  • He has been under achieving. Look for him to bounce back.
  • Trending Pitching Stats

  • Currently ranked 154th in WHIP with 1.62
  • Currently ranked 128th in ERA with 5.19
  • Top 20 in walks and is currently ranked 19th with 25
  • Top 35 in strikeouts and is currently ranked 31st with 69
  • His average points in the past two weeks have increased by 2.6 PPG.
  • At this point in the season his numbers compared to last years: W: -4, L: +1, WHIP: +0.537, ERA: +1.982, K's: -8, Walks: +10
Breakdown Kumar Rocker

    Overview

  • Experts don't even rank him among SP's. Based on his stats from the past 60 days, he is currently ranked 74th.
  • The current leader among SP's is Cristopher Sanchez
  • Trending Pitching Stats

  • Top 100 in WHIP and is currently ranked 90th
  • Top 75 in ERA and is currently ranked 58th with 3.63
  • Top 15 in walks and is currently ranked 15th with 25
  • Currently ranked 129th in wins with 2
  • His average points in the past two weeks have remained fairly consistant and rose slightly by 0.2 PPG.
  • At this point in the season his numbers compared to last years: W: +1, L: +1, WHIP: -0.61, ERA: -5.701, K's: +28, Walks: +19
Next Up Health Check
Injury Jack Flaherty

No Injury Reported

Injury Kumar Rocker

No Injury Reported

Next Up Matchup Comparison
Matchups Jack Flaherty
DateOpponentResult
Jun 09VS MINTaj Bradley
Jun 10VS MIN
Jun 11VS MINZebby Matthews
Jun 12@CLETanner Bibee
Jun 13@CLEJoey Cantillo
Jun 14@CLEGavin Williams
ERA W-L HLD SV SO WLK WHIP GP
1.730-000631.541
Season stats based on this weeks opponents
Matchups Kumar Rocker
DateOpponentResult
Jun 09@KCStephen Kolek
Jun 10@KCSeth Lugo
Jun 11@KCMichael Wacha
Jun 12@BOSSonny Gray
Jun 13@BOSRanger Suarez
Jun 14@BOSConnelly Early
ERA W-L HLD SV SO WLK WHIP GP
0.000-000231.001
Season stats based on this weeks opponents
Next Up Ratings Comparison
Rating Jack Flaherty
9.56
FantasySP Player Rating
Rating Kumar Rocker
7.89
FantasySP Player Rating
Next Up Career Comparison
Career Jack Flaherty
YEAR TM APP INN PC K WLK SV W-L ERA WHIP K/9 PTS
2017 STL 6 21.1 358 20 10 0 0-2 6.33 1.55 8.4 31
2018 STL 28 148.2 2587 182 59 0 8-9 3.33 1.12 11 408
2019 STL 36 211.0 3478 253 59 0 12-10 2.9 1 10.8 599
2020 STL 12 53.0 965 65 24 0 4-5 4.58 1.28 11 120
2021 STL 17 79.0 1353 85 26 0 9-2 3.19 1.05 9.7 234
2022 STL 8 35.0 643 32 22 0 2-1 3.86 1.57 8.2 71
2023 STL 30 144.0 2684 149 69 0 8-9 5.06 1.62 9.3 266
2024 DET 33 179.1 3034 209 47 0 14-9 3.76 1.15 10.5 472
2025 DET 34 166.1 3024 200 67 0 8-16 4.71 1.33 10.8 334
2026 DET 14 60.1 1226 77 33 0 1-7 5.52 1.64 11.5 89
ON PACE 34 148 3009 189 81 0 2-17 5.52 1.64 11.5 218
3-YEAR AVG 32 162 2914 186 61 0 10-11 4.45 1.34 10.2 358
Career 218 1091.0 19352 1272 416 0 0-0 4.03 1.26 10.5
Career Kumar Rocker
YEAR TM APP INN PC K WLK SV W-L ERA WHIP K/9 PTS
2024 TEX 3 11.2 218 14 6 0 0-2 3.86 1.54 10.8 13
2025 TEX 14 62.0 1127 56 23 0 4-5 5.95 1.52 8.1 101
2026 TEX 12 61.0 1026 49 26 0 2-5 3.54 1.31 7.2 101
ON PACE 29 153 2557 122 64 0 4-12 3.54 1.31 7.2 251
3-YEAR AVG 9 37 673 35 15 0 2-4 5.45 1.5 8.3 57
Career 29 134.2 2371 119 55 0 0-0 4.68 1.43 8
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Matchups

Week 1
ARI @LAC
ATL @PIT
BAL @IND
BUF @HOU
CAR vs CHI
CIN vs TB
CLE @JAC
DAL @NYG
DEN @KC
DET vs NO
GB @MIN
LAR vs SF
LV vs MIA
NE @SEA
NYJ @TEN
PHI vs WAS
Matchup Time Pitchers
ARI @MIA 06:40 EDT EST Ryne Nelson
Ryan Gusto
ATH vs MIL 09:05 EDT EST Jack Perkins
Brandon Sproat
ATL @CHW 07:40 EDT EST Chris Sale
Erick Fedde
BAL vs SEA 06:35 EDT EST Brandon Young
George Kirby
BOS @TB 01:10 EDT EST
Drew Rasmussen
CHC @COL 08:40 EDT EST Shota Imanaga
Michael Lorenzen
CIN @SD 04:10 EDT EST Brady Singer
Michael King
CLE vs NYY 01:10 EDT EST Parker Messick
Carlos Rodon
DET vs MIN 06:40 EDT EST Framber Valdez
HOU @LAA 09:38 EDT EST Peter Lambert
Reid Detmers
KC vs TEX 07:40 EDT EST Seth Lugo
MacKenzie Gore
LAD @PIT 06:40 EDT EST Shohei Ohtani
Jared Jones
NYM vs STL 07:10 EDT EST Christian Scott
Andre Pallante
PHI @TOR 07:07 EDT EST Jesus Luzardo
Max Scherzer
SF vs WAS 03:45 EDT EST Robbie Ray
Foster Griffin
Matchup Time
NY vs SA 8:30 PM EST
Matchup Time
No games scheduled