5.06
ERA
1.39
WHIP
7.8
K/9
99.2
IP
17
GS
2.9
BB/9
vs BOS — career
9.00ERA1GS.389OPP AVG4K
Chicago White Sox vs Boston Red Sox
—:—
7:10 PM ET
H2H 3–4
BOS · Home · 62-51
Boston Red Sox
Starting pitchers
3.15
ERA
1.16
WHIP
9.4
K/9
100.0
IP
19
GS
2.5
BB/9
Starter form · last 5 starts
Season5.06
Last 54.66
↑0.40 ERA better in last 5
⚡ Alternating good/bad starts
Matchup edge
Ranger Suarez pitching edge·Boston 9–1 L10
Lineup not yet announced · posted ~1–2 hrs before first pitch
Projected hitters vs LHP / RHP
Chicago vs LHP
Avg OPS 0.7773 hot hittersTop: Vargas 1.055 · Grichuk 1.025 · Murakami 0.911
Projected sample — season splits vs pitcher hand, not official order.
Boston vs RHP
Avg OPS 0.7131 hot hitterTop: Contreras 0.901 · Mead 0.781 · Rafaela 0.715
Projected sample — season splits vs pitcher hand, not official order.
Chicago White Sox hitters vs LHP (projected)
Batter
AVG
OPS
HR
Boston Red Sox hitters vs RHP (projected)
Batter
AVG
OPS
HR
◆ Matchup preview
Chicago White Sox at Boston Red Sox (2026-08-06). Luis Castillo vs Ranger Suarez at Fenway Park.
Starters — Luis Castillo enters with a 5.06 ERA, 1.39 WHIP, and 99.2 innings, with 7.77 K/9, 2.89 BB/9, and 1.44 HR/9. His last three starts were 5.0 IP/5 ER/2 K/2 BB, 7.0 IP/3 ER/3 K/2 BB, and 5.0 IP/4 ER/4 K/1 BB. The recent form points upward in earned runs allowed, and the home run rate remains a concern. Ranger Suarez has a 3.15 ERA, 1.16 WHIP, and 100.0 innings, with 9.45 K/9, 2.52 BB/9, and 0.45 HR/9. His last three starts were 4.2 IP/3 ER/2 K/2 BB, 4.0 IP/0 ER/6 K/0 BB, and 2.2 IP/3 ER/5 K/0 BB. The trend is listed down, but the season profile still shows better bat-missing ability and much stronger home run suppression.
Teams — Chicago has a .719 OPS and 533 runs scored with a .237 team average. The White Sox pitching staff carries a 4.08 ERA and 1.30 WHIP, and they are 5-5 over the last 10 games. Boston has a .717 OPS and 492 runs scored with a .246 team average. The Red Sox staff has been sharper overall, posting a 3.49 ERA and 1.22 WHIP, and they come in 9-1 over their last 10 games. Chicago has produced slightly more runs overall, but Boston brings the stronger recent form and the more reliable run prevention profile.
Head to head (2025–2026)
3—4
Boston Red Sox lead series
7 meetings total
2025-04-21
Chicago White Sox @ Boston Red Sox
2–4
BOS
2025-04-20
Chicago White Sox @ Boston Red Sox
8–4
CWS
2025-04-19
Chicago White Sox @ Boston Red Sox
3–4
BOS
2025-04-18
Chicago White Sox @ Boston Red Sox
3–10
BOS
2025-04-13
Boston Red Sox @ Chicago White Sox
3–1
BOS
Team picture · 2026
CWS
BOS
Team AVG
0.237
0.246
Team OPS
0.719
0.717
Home runs
146
116
Runs scored
533
492
Team ERA
4.08
3.49
HR allowed
122
111
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