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Sonny Gray or Stephen Kolek

Who Should I Start? - Week 15 • Start New
Sonny Gray

Sonny Gray

SPBoston Red Sox BOS
Stephen Kolek

Stephen Kolek

SPKansas City Royals KC
OR
🔓 EXPERT ANALYSIS

Owners starting Gray over Kolek

 
 
 
 
START BOTH START BENCH BOTH BN

Includes Detailed Projections

Outlook Sonny Gray

Two-Start Week for Boston's Consistent Righty Offers High Fantasy Upside Despite Mixed Matchups

Sonny Gray has been solid over his last 30 days, posting a 3.40 ERA and 1.27 WHIP across five starts, with an even sharper 2.77 ERA over his last 14 days. The veteran right-hander is locked in as a mid-rotation staple for the fifth-place Red Sox (31-44), who enter the week looking to snap a one-game slide. After recovering from an early-season hamstring strain, Gray is fully healthy and pitching deep into games.

Looking under the hood, Gray's current 3.16 ERA on the year is outperforming our projection of 3.75, though his 1.20 WHIP is right in line with his career baselines. While his strikeout rate is slightly down at 7.24 K/9, his excellent control and low walk rates suggest this success is sustainable. Expect some minor ERA regression, but he remains a highly reliable ratio stabilizer.

Fantasy managers get a double dose of Gray this week as he is scheduled for two starts. His first matchup is on Tuesday at Colorado against Sean Sullivan, who has struggled with a 10.29 ERA, followed by a Sunday home start against the first-place Yankees and Carlos Rodon. Despite the Coors Field risk and a tough New York lineup, he is a must-activate weekly Start.

Updated 1 day ago

Latest News Sonny Gray
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🔓 EXPERT ANALYSIS

Owners starting Kolek over Gray

 
 
 
 
START BOTH START BENCH BOTH BN

Includes Detailed Projections

Outlook Stephen Kolek

Stephen Kolek looks to rebound against division rivals after a disastrous outing

Kolek's strong run took a massive hit over the last seven days, where he was hit hard for nine runs over just 1.2 innings, inflating his 14-day ERA to 6.77. Despite the blowup, he remains locked in as a back-end starter for the fifth-place Royals (32-46) who are currently dealing with a heavily depleted starting rotation.

Before this rough patch, the right-hander showed promise with a 4.20 ERA over his last 30 days, which aligns closely with our rest-of-season projected 4.28 ERA. However, his mediocre 6.05 K/9 rate over 50.6 innings this year suggests he lacks the swing-and-miss stuff to consistently bail himself out of trouble when base runners accumulate.

Kolek has one projected start this week, coming on June 26 on the road against the White Sox. While Chicago represents a favorable matchup for a potential bounce-back game, his recent volatility and dangerous 1.88 WHIP over his last two weeks make him a massive risk. Verdict: Sit.

Updated 1 day ago

Latest News Stephen Kolek
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Performance Sonny Gray
Fantasy Chart Loading...

ERA W-L HLD SV SO WLK WHIP GP
3.860-000411.001
Season stats based on the past 7 days

ERA W-L HLD SV SO WLK WHIP GP
2.771-0001110.922
Season stats based on the past 14 days
Performance Stephen Kolek
Fantasy Chart Loading...

ERA W-L HLD SV SO WLK WHIP GP
67.500-100018.331
Season stats based on the past 7 days

ERA W-L HLD SV SO WLK WHIP GP
6.431-100731.793
Season stats based on the past 14 days
Next Up Own/Start Comparison
OWN/START Sonny Gray
OWN
99%
+1.32 compared to last week
START
80%
+22.61 compared to last week
OWN/START Stephen Kolek
OWN
42%
-13.96 compared to last week
START
23%
-11.46 compared to last week
Next Up Consensus Rankings
Expert Consensus Sonny Gray
53rd
Average Ranking of Fantasy Experts
Expert Consensus Stephen Kolek
107th
Average Ranking of Fantasy Experts
Next Up Player Breakdowns
Breakdown Sonny Gray

    Overview

  • Experts rank this player at 53rd among SP's. Based on his stats from the past 60 days, he is currently ranked 27th.
  • The current leader among SP's is Jacob Misiorowski
  • He is doing much better than most people thought he would. Can he keep this up?
  • Trending Pitching Stats

  • Top 50 in WHIP and is currently ranked 43rd with 1.13
  • Top 25 in ERA and is currently ranked 22nd with 2.54
  • He is among the best in wins and is currently ranked 8th with 6
  • His average points in the past two weeks have increased by 2 PPG.
  • At this point in the season his numbers compared to last years: W: +1, L: -1, WHIP: -0.02, ERA: -0.642, K's: -35, Walks: EVEN
Breakdown Stephen Kolek

    Overview

  • Experts rank this player at 108th among SP's. Based on his stats from the past 60 days, he is currently ranked 64th.
  • The current leader among SP's is Jacob Misiorowski
  • You have to be impressed by how much better he is performing. Can he keep this up or is it a fluke?
  • Trending Pitching Stats

  • Top 75 in WHIP and is currently ranked 66th with 1.23
  • Top 100 in ERA and is currently ranked 83rd
  • Top 75 in wins and is currently ranked 58th with 4
  • Decline in numbers lately by 3.3 PPG.
  • At this point in the season his numbers compared to last years: W: +1, L: -1, WHIP: -0.158, ERA: +0.052, K's: -8, Walks: -9
Next Up Health Check
Injury Sonny Gray

No Injury Reported

Injury Stephen Kolek

No Injury Reported

Next Up Matchup Comparison
Matchups Sonny Gray
DateOpponentResult
Jun 22@COLVictor VodnikL 3-2
Jun 23@COLSean Sullivan
Jun 24@COLKyle Freeland
Jun 25VS NYYCam Schlittler
Jun 26VS NYYWill Warren
Jun 27VS NYYGerrit Cole
Jun 28VS NYYCarlos Rodon
ERA W-L HLD SV SO WLK WHIP GP
4.431-000321.641
Season stats based on this weeks opponents
Matchups Stephen Kolek
DateOpponentResult
Jun 22@TBMichael WachaW 1-2
Jun 23@TBShane McClanahan
Jun 24@TBGriffin Jax
Jun 25@TBIan Seymour
Jun 26@CHW
Jun 27@CHW
Jun 28@CHWAnthony Kay
ERA W-L HLD SV SO WLK WHIP GP
10.710-000631.901
Season stats based on this weeks opponents
Next Up Ratings Comparison
Rating Sonny Gray
14.20
FantasySP Player Rating
Rating Stephen Kolek
9.03
FantasySP Player Rating
Next Up Career Comparison
Career Sonny Gray
YEAR TM APP INN PC K WLK SV W-L ERA WHIP K/9 PTS
2013 OAK 12 64.0 995 67 20 0 5-3 2.67 1.11 9.4 190
2014 OAK 33 216.2 3295 183 74 0 14-10 3.12 1.21 7.6 556
2015 OAK 31 208.0 3078 169 59 0 14-7 2.73 1.08 7.3 546
2016 OAK 22 117.0 1947 94 42 0 5-11 5.69 1.5 7.2 216
2017 OAK 27 160.0 2663 153 57 0 10-12 3.6 1.23 8.6 407
2018 NYY 30 128.0 2249 123 57 0 11-9 4.99 1.52 8.7 283
2019 CIN 31 173.0 2909 205 68 0 11-8 2.86 1.1 10.7 489
2020 CIN 11 56.0 968 72 26 0 5-3 3.7 1.21 11.6 153
2021 CIN 25 131.2 2162 147 50 0 7-9 4.17 1.23 10.1 283
2022 MIN 24 121.2 1872 117 36 0 8-5 3.11 1.11 8.7 289
2023 MIN 34 193.0 2987 195 58 0 8-9 2.8 1.17 9.1 454
2024 STL 28 164.0 2483 203 39 0 13-9 3.9 1.1 11.1 433
2025 STL 32 180.2 2719 201 38 0 14-8 4.28 1.23 10 442
2026 BOS 13 69.1 1041 55 17 0 8-1 3.12 1.18 7.1 188
ON PACE 27 148 2218 117 36 0 17-2 3.12 1.18 7.1 400
3-YEAR AVG 31 178 2730 200 45 0 12-9 3.6 1.17 10 443
Career 353 1966.2 31368 1984 641 0 0-0 3.61 1.22 9.1
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 9 52.0 786 34 11 0 4-2 4.15 1.19 5.9 113
ON PACE 18 107 1611 69 22 0 8-4 4.15 1.19 5.9 231
3-YEAR AVG 31 75 1243 58 22 0 4-4 4.32 1.35 7 150
Career 70 202.0 3272 150 54 0 0-0 4.23 1.3 6.7
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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 @STL 07:45 EDT EST Eduardo Rodriguez
Kyle Leahy
ATH @SF 09:45 EDT EST Aaron Civale
Robbie Ray
ATL @SD 09:40 EDT EST JR Ritchie
Griffin Canning
BAL @LAA 09:38 EDT EST Shane Baz
Ryan Johnson
BOS @COL 08:40 EDT EST Sonny Gray
Sean Sullivan
CHC @NYM 07:10 EDT EST Edward Cabrera
Kodai Senga
CHW vs CLE 07:40 EDT EST Sean Burke
Parker Messick
CIN vs MIL 07:10 EDT EST Nick Lodolo
Brandon Sproat
DET vs NYY 06:40 EDT EST Casey Mize
Carlos Rodon
HOU @TOR 04:07 EDT EST Peter Lambert
Shane Bieber
KC @TB 06:40 EDT EST Luinder Avila
Shane McClanahan
LAD @MIN 07:40 EDT EST Justin Wrobleski
Kendry Rojas
MIA vs TEX 06:40 EDT EST Sandy Alcantara
Cal Quantrill
PHI @WAS 06:45 EDT EST Jesus Luzardo
Zack Littell
PIT vs SEA 06:40 EDT EST Mitch Keller
George Kirby
Matchup Time
No games scheduled
Matchup Time
No games scheduled