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Casey Mize or Stephen Kolek

Who Should I Start? - Week 13 • Start New
Casey Mize

Casey Mize

SPDetroit Tigers DET
Stephen Kolek

Stephen Kolek

SPKansas City Royals KC
OR
🔓 EXPERT ANALYSIS

Owners starting Mize over Kolek

 
 
 
 
START BOTH START BENCH BOTH BN

Includes Detailed Projections

Outlook Casey Mize

Casey Mize nears return after encouraging rehab start, but remains sidelined for the upcoming week.

Casey Mize is making progress in his recovery from a right adductor strain, most recently delivering an encouraging rehab start on June 9 where he struck out five over five innings. He remains on the injured list for the last-place Tigers (28-40), who eagerly await his return to a rotation that also expects Tarik Skubal back soon.

Before landing on the shelf, Mize was enjoying a breakout campaign, posting a stellar 2.36 ERA and 1.00 WHIP with 49 strikeouts in 45.8 innings. While our models project some regression toward a 4.11 ERA and 1.27 WHIP over the rest of the season, his underlying metrics and nasty splitter suggest his step forward is legitimate.

With no major league starts scheduled for the remaining matchups against Minnesota and Cleveland this week, Mize will not contribute to fantasy lineups immediately. Fantasy managers should keep him stashed on the injured list as he builds up pitch count, making him a mandatory sit for now.

Updated 1 day ago

Latest News Casey Mize
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🔓 EXPERT ANALYSIS

Owners starting Kolek over Mize

 
 
 
 
START BOTH START BENCH BOTH BN

Includes Detailed Projections

Outlook Stephen Kolek

Kolek leverages two-start week to boost his fantasy utility despite looming regression

Slots in as the fifth starter for the fourth-place Royals, Stephen Kolek has been a steady rotation presence. Over his last 30 days, he has excelled with a 2.98 ERA and 1.16 WHIP over 36.3 innings. With rotation mates Cole Ragans and Seth Lugo currently on the injury report, Kolek's health is crucial for the team's depth.

Our models project some regression for Kolek, pointing toward a 4.28 ERA and 1.36 WHIP rest of season. His current 3.19 ERA outpaces his 3.64 mark from last year, but a high hit rate suggests he is dancing out of danger and may face traffic trouble soon.

Kolek is a two-start pitcher this week. Having already earned a win on June 9th against Texas, his remaining matchup on June 14th is against Houston, where he faces a tough opponent in Spencer Arrighetti (2.21 ERA). Our weekly projection expects 13.0 total innings, making him a worthy Start.

Updated 1 day ago

Latest News Stephen Kolek
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Performance Casey Mize
Fantasy Chart Loading...

ERA W-L HLD SV SO WLK WHIP GP
nan-nan0
Season stats based on the past 7 days

ERA W-L HLD SV SO WLK WHIP GP
nan-nan0
Season stats based on the past 14 days
Performance Stephen Kolek
Fantasy Chart Loading...

ERA W-L HLD SV SO WLK WHIP GP
1.800-000311.801
Season stats based on the past 7 days

ERA W-L HLD SV SO WLK WHIP GP
2.250-0001131.422
Season stats based on the past 14 days
Next Up Own/Start Comparison
OWN/START Casey Mize
OWN
67%
+3.97 compared to last week
START
 
4%
+0.02 compared to last week
OWN/START Stephen Kolek
OWN
41%
+4 compared to last week
START
20%
+7.94 compared to last week
Next Up Consensus Rankings
Expert Consensus Casey Mize
71st
Average Ranking of Fantasy Experts
Expert Consensus Stephen Kolek
116th
Average Ranking of Fantasy Experts
Next Up Player Breakdowns
Breakdown Casey Mize

    Overview

  • Experts rank this player at 72nd among SP's. Based on his stats from the past 60 days, he is currently ranked 94th.
  • The current leader among SP's is Jacob Misiorowski
  • He should be doing much better than this. You might be able to get him now for a discount.
  • In the past two weeks he has had an awful lot of time off and he's listed on the injury report. He may have some nagging injuries with his Adductor (Since May 28, 2026). Stay clear of him if its going to stick around, otherwise now is the time to get a guy at a bargain price since he is hurt. Check out his player news.
  • Trending Pitching Stats

  • WHIP is among the best in the league currently ranked 4th with 0.75
  • ERA is among the best in the league currently ranked 4th with 1.48
  • His average points in the past two weeks have dipped quite a bit at 5.9.
  • At this point in the season his numbers compared to last years: W: -4, L: +1, WHIP: -0.354, ERA: -0.766, K's: -6, Walks: -6
Breakdown Stephen Kolek

    Overview

  • Experts rank this player at 117th among SP's. Based on his stats from the past 60 days, he is currently ranked 64th.
  • The current leader among SP's is Cristopher Sanchez
  • He is performing amazing in the past 30 days. Will he keep it up?
  • Trending Pitching Stats

  • Top 35 in WHIP and is currently ranked 34th with 1.09
  • Top 50 in ERA and is currently ranked 40th with 3.19
  • Currently ranked 101st in wins with 3
  • Slight decline in numbers lately at 2.4 PPG.
  • At this point in the season his numbers compared to last years: W: EVEN, L: -1, WHIP: -0.295, ERA: -0.484, K's: -4, Walks: -9
Next Up Health Check
Injury Casey Mize

ADDUCTOR - Since May 28, 2026

Mize is dealing with right adductor inflammation and has been placed on the 15-day injured list. He is expected to return in mid-June.
Injury Stephen Kolek

No Injury Reported

Next Up Matchup Comparison
Matchups Casey Mize
DateOpponentResult
Jun 09VS MINTroy MeltonW 10-4
Jun 10VS MINTaylor RogersL 4-6
Jun 11VS MINKeider MonteroW 11-0
Jun 12@CLETanner BibeeL 3-2
Jun 13@CLEJoey Cantillo
Jun 14@CLEGavin Williams
ERA W-L HLD SV SO WLK WHIP GP
5.730-200831.272
Season stats based on this weeks opponents
Matchups Stephen Kolek
DateOpponentResult
Jun 09VS TEXSteven CruzW 5-3
Jun 10VS TEXJakob JunisL 4-6
Jun 11VS TEXJacob LatzL 2-4
Jun 12VS HOUNate PearsonL 8-10
Jun 13VS HOUMike Burrows
Jun 14VS HOUSpencer Arrighetti
ERA W-L HLD SV SO WLK WHIP GP
4.500-100821.602
Season stats based on this weeks opponents
Next Up Ratings Comparison
Rating Casey Mize
9.20
FantasySP Player Rating
Rating Stephen Kolek
9.17
FantasySP Player Rating
Next Up Career Comparison
Career Casey Mize
YEAR TM APP INN PC K WLK SV W-L ERA WHIP K/9 PTS
2020 DET 7 28.1 543 26 13 0 0-3 6.99 1.48 8.3 31
2021 DET 29 148.1 2303 115 40 0 7-9 3.7 1.13 7 291
2022 DET 2 10.0 169 4 2 0 0-1 5.4 1.5 3.6 6
2024 DET 22 100.0 1789 78 29 0 2-6 4.68 1.51 7 150
2025 DET 30 150.1 2469 146 40 0 14-6 3.95 1.3 8.7 359
2026 DET 9 47.2 697 49 12 0 2-3 2.27 0.97 9.3 119
ON PACE 20 110 1613 113 27 0 4-6 2.27 0.97 9.3 276
3-YEAR AVG 17 83 1419 75 23 0 5-4 4.21 1.39 8.1 170
Career 99 480.0 7970 418 136 0 0-0 4.11 1.29 7.8
Career Stephen Kolek
YEAR TM APP INN PC K WLK SV W-L ERA WHIP K/9 PTS
2024 SD 42 42.0 797 39 12 0 3-0 5.79 1.69 8.4 85
2025 SD 19 110.1 1689 77 31 0 5-7 3.59 1.17 6.3 216
2026 KC 7 43.0 640 30 9 0 3-1 3.14 1.07 6.3 105
ON PACE 16 100 1481 69 20 0 6-2 3.14 1.07 6.3 243
3-YEAR AVG 31 75 1243 58 22 0 4-4 4.32 1.35 7 150
Career 68 193.0 3126 146 52 0 0-0 4.01 1.27 6.8
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RECENT DECISIONS

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Player News

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 @CIN 04:10 EDT EST Michael Soroka
Rhett Lowder
ATH vs COL 10:05 EDT EST Joey Estes
Kyle Freeland
ATL @NYM 04:10 EDT EST Martin Perez
Sean Manaea
BAL vs SD 04:05 EDT EST Trey Gibson
Randy Vasquez
BOS vs TEX 04:10 EDT EST Ranger Suarez
Jacob deGrom
CHC @SF 10:05 EDT EST Ben Brown
Trevor McDonald
CHW vs LAD 04:10 EDT EST Sean Burke
Yoshinobu Yamamoto
CLE vs DET 04:10 EDT EST Joey Cantillo
Tarik Skubal
HOU @KC 07:10 EDT EST Mike Burrows
Noah Cameron
LAA vs TB 10:07 EDT EST Jose Soriano
Griffin Jax
MIA @PIT 04:05 EDT EST Lake Bachar
Bubba Chandler
MIL vs PHI 07:10 EDT EST Shane Drohan
Aaron Nola
MIN vs STL 02:10 EDT EST Connor Prielipp
Matthew Liberatore
NYY @TOR 03:07 EDT EST Cam Schlittler
Kevin Gausman
SEA @WAS 04:05 EDT EST Luis Castillo
Cade Cavalli
Matchup Time
NY @SA 8:30 PM EST
Matchup Time
No games scheduled