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Trevor McDonald or Mitch Keller

Who Should I Start? - Week 15 • Start New
Trevor McDonald

Trevor McDonald

SPSan Francisco Giants SF
Mitch Keller

Mitch Keller

SPPittsburgh Pirates PIT
OR
🔓 EXPERT ANALYSIS

Owners starting McDonald over Keller

 
 
 
 
START BOTH START BENCH BOTH BN

Includes Detailed Projections

Outlook Trevor McDonald

Recent struggles cloud Trevor McDonald's fantasy appeal ahead of a favorable matchup in Miami.

Trevor McDonald has hit a rough patch, struggling to an 11.25 ERA and 2.81 WHIP over his last 3.2 innings, though he remains locked into the San Francisco rotation as their number four starter. The fourth-place Giants are riding a three-game win streak, and with rotation injuries to Tyler Mahle and Keaton Winn, McDonald's spot is secure.

While his 6.80 ERA over the last 30 days is alarming, our models project a more stable 4.43 ERA and 1.38 WHIP. The young righty boasts solid strikeout upside, but his recent walk rate suggests his current struggles are a classic case of rookie growing pains rather than a permanent regression.

McDonald has a single-start week scheduled on June 19th on the road against the Marlins. While Miami presents a relatively soft matchup, his extreme volatility and elevated WHIP make him a primary bench candidate this week. Verdict: Sit.

Updated 2 days ago

Latest News Trevor McDonald
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🔓 EXPERT ANALYSIS

Owners starting Keller over McDonald

 
 
 
 
START BOTH START BENCH BOTH BN

Includes Detailed Projections

Outlook Mitch Keller

Mitch Keller looks to stabilize ratios and secure mid-rotation value

Mitch Keller enters the 2026 campaign solidified as a mid-rotation staple for the Pirates, officially slotting in as the number two starter in the rotation behind sophomore sensation Paul Skenes. At 30 years old, Keller brings veteran stability to a young Pittsburgh rotation. He has proven durable throughout his career, throwing over 170 innings in each of his last three seasons. This reliability makes him a highly active asset for fantasy managers looking for volume, even if he occasionally experiences some performance volatility.

Our projections expect Keller to bounce back from last year's minor regression, forecasting a 4.24 ERA and a 1.28 WHIP over 176.0 projected innings. Keller's strikeout numbers should remain helpful but not elite, as our models project 110 strikeouts, translating to a moderate strikeout-to-walk ratio. While his career metrics suggest his ceiling is capped near a low-4.00 ERA, he is supported by a Pirates lineup that features some ascending bats, giving him decent opportunities to push for seven wins despite pitching in a highly competitive division.

Drafting near his ADP of 240, Keller represents a highly accessible depth starter who can anchor the back end of fantasy rotations. He is a relatively safe floor play who will provide valuable volume, though fantasy managers should be prepared for occasional ratio risk in tough matchups. Keller is best utilized as a matchup-dependent starter rather than an undisputed weekly option.

Updated 2 days ago

Latest News Mitch Keller
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Performance Trevor McDonald
Fantasy Chart Loading...

ERA W-L HLD SV SO WLK WHIP GP
9.000-100132.001
Season stats based on the past 7 days

ERA W-L HLD SV SO WLK WHIP GP
6.430-2001191.963
Season stats based on the past 14 days
Performance Mitch Keller
Fantasy Chart Loading...

ERA W-L HLD SV SO WLK WHIP GP
7.060-000741.761
Season stats based on the past 7 days

ERA W-L HLD SV SO WLK WHIP GP
8.900-1001082.202
Season stats based on the past 14 days
Next Up Own/Start Comparison
OWN/START Trevor McDonald
OWN
20%
-4.71 compared to last week
START
18%
-3.36 compared to last week
OWN/START Mitch Keller
OWN
43%
-5.2 compared to last week
START
20%
-7.48 compared to last week
Next Up Consensus Rankings
Expert Consensus Trevor McDonald
115th
Average Ranking of Fantasy Experts
Expert Consensus Mitch Keller
114th
Average Ranking of Fantasy Experts
Next Up Player Breakdowns
Breakdown Trevor McDonald

    Overview

  • Experts rank this player at 115th among SP's. Based on his stats from the past 60 days, he is currently ranked 103rd.
  • The current leader among SP's is Jacob Misiorowski
  • He is doing a better than most people thought he would.
  • Trending Pitching Stats

  • Top 100 in WHIP and is currently ranked 91st
  • Top 100 in ERA and is currently ranked 99th
  • Top 100 in walks and is currently ranked 85th with 15
  • Currently ranked 193rd in wins with 2
  • Slight decline in numbers lately at 2.1 PPG.
  • At this point in the season his numbers compared to last years: W: +2, L: +4, WHIP: +1.3, ERA: +4.69, K's: +41, Walks: +15
Breakdown Mitch Keller

    Overview

  • Experts rank this player at 114th among SP's. Based on his stats from the past 60 days, he is currently ranked 106th.
  • The current leader among SP's is Jacob Misiorowski
  • He is putting up better numbers than the experts expected him to.
  • Trending Pitching Stats

  • Currently ranked 127th in WHIP with 1.51
  • Currently ranked 149th in ERA with 6.79
  • Top 35 in walks and is currently ranked 29th with 22
  • Currently ranked 110th in wins with 3
  • Decline in numbers lately by 4.2 PPG.
  • At this point in the season his numbers compared to last years: W: +4, L: -6, WHIP: +0.098, ERA: +1.178, K's: -8, Walks: +7
Next Up Health Check
Injury Trevor McDonald

No Injury Reported

Injury Mitch Keller

No Injury Reported

Next Up Matchup Comparison
Matchups Trevor McDonald
DateOpponentResult
Jun 16@ATLRobbie RayW 2-7
Jun 17@ATLCarson WhisenhuntW 5-7
Jun 18@ATL
Jun 19@MIACade GibsonL 4-3
Jun 20@MIAMax MeyerL 6-3
Jun 21@MIARyan Gusto
ERA W-L HLD SV SO WLK WHIP GP
9.000-100132.001
Season stats based on this weeks opponents
Matchups Mitch Keller
DateOpponentResult
Jun 15@ATHJ.T. GinnL 11-2
Jun 16@ATHMason MontgomeryW 5-6
Jun 17@ATHBraxton AshcraftW 4-12
Jun 19@COLAntonio SenzatelaL 4-3
Jun 20@COLTomoyuki SuganoL 2-1
Jun 21@COLMichael Lorenzen
ERA W-L HLD SV SO WLK WHIP GP
8.180-1001051.552
Season stats based on this weeks opponents
Next Up Ratings Comparison
Rating Trevor McDonald
6.80
FantasySP Player Rating
Rating Mitch Keller
8.65
FantasySP Player Rating
Next Up Career Comparison
Career Trevor McDonald
YEAR TM APP INN PC K WLK SV W-L ERA WHIP K/9 PTS
2024 SF 1 3.0 39 1 1 0 0-0 0 0.33 3 7
2025 SF 3 15.0 212 14 2 0 1-0 3.6 1.07 8.4 41
2026 SF 8 42.2 690 41 15 0 2-4 4.64 1.29 8.7 76
ON PACE 17 90 1470 87 31 0 4-8 4.64 1.29 8.7 161
3-YEAR AVG 2 9 126 8 2 0 1-0 3 1 8 24
Career 12 60.2 941 56 18 0 0-0 4.15 1.19 8.3
Career Mitch Keller
YEAR TM APP INN PC K WLK SV W-L ERA WHIP K/9 PTS
2019 PIT 11 48.0 932 65 16 0 1-5 7.13 1.83 12.2 71
2020 PIT 5 21.2 385 16 18 0 1-1 2.91 1.25 6.7 43
2021 PIT 23 102.0 1858 92 49 0 5-11 6.09 1.76 8.1 107
2022 PIT 31 159.0 2661 138 60 0 5-12 3.91 1.4 7.8 280
2023 PIT 32 194.1 3122 210 55 0 13-9 4.17 1.25 9.7 466
2024 PIT 31 178.0 2851 166 50 0 11-12 4.25 1.3 8.4 367
2025 PIT 32 174.0 2870 150 51 0 6-15 4.24 1.28 7.8 316
2026 PIT 15 82.1 1334 65 31 0 5-4 5.25 1.34 7.1 153
ON PACE 31 173 2806 136 65 0 10-8 5.25 1.34 7.1 321
3-YEAR AVG 32 180 2948 175 52 0 10-12 4.22 1.28 8.7 383
Career 180 950.0 16013 902 330 0 0-0 4.61 1.39 8.6
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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 vs MIN 03:15 EDT EST Jose Cabrera
Mike Paredes
ATH vs LAA 04:05 EDT EST Jack Perkins
Reid Detmers
ATL vs MIL 01:35 EDT EST Bryce Elder
Robert Gasser
BAL @LAD 04:10 EDT EST Brandon Young
Emmet Sheehan
BOS @SEA 04:10 EDT EST Payton Tolle
Logan Gilbert
CHC vs TOR 02:20 EDT EST Shota Imanaga
Dylan Cease
CHW @DET 01:40 EDT EST Davis Martin
Keider Montero
CIN @NYY 01:35 EDT EST Chase Burns
Elmer Rodriguez
CLE @HOU 02:10 EDT EST Slade Cecconi
Kai-Wei Teng
COL vs PIT 03:10 EDT EST Michael Lorenzen
Jared Jones
KC vs STL 02:10 EDT EST Stephen Kolek
Dustin May
MIA vs SF 01:40 EDT EST Ryan Gusto
Logan Webb
NYM @PHI 07:20 EDT EST David Peterson
Zack Wheeler
SD @TEX 02:35 EDT EST Lucas Giolito
Nathan Eovaldi
TB vs WAS 01:40 EDT EST Nick Martinez
Andrew Alvarez
Matchup Time
No games scheduled
Matchup Time
No games scheduled