PREVIEW Starts 4:10 PM ET · Fenway Park
September 12, 2026 · AL East

Kansas City Royals at Boston Red Sox

September 12, 20264:10 PM ETFenway Park
AWAY
Kansas City Royals
33-46
@
HOME
Boston Red Sox
31-45

Lineups

Lineups are usually announced ~90 minutes before first pitch. Check back soon.

Manager comparison

AWAY · KC
Matt Quatraro
Lineup 3.1 R Bunts 1.6 R IBBs 1.5 R
HOME · BOS
Chad Tracy
Lineup 1.2 R Bunts 0.9 R IBBs 0.2 R Interim

Bullpen availability

AWAY · KC
  • Available 7
  • Limited 2
  • Rest required 0
  • Inactive 0
HOME · BOS
  • Available 8
  • Limited 0
  • Rest required 0
  • Inactive 0

Recent form

AWAY · KC
5-5 W1 +7 run diff
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HOME · BOS
4-6 L2 +6 run diff
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Pitching & bullpen preview

Probable starters and each bullpen's availability load in the sections above — the Royals and Red Sox staffs going in.

Once the game ends, a full pitching and bullpen breakdown appears here: starter lines, the relief sequence and each arm's role, pitch counts, and where the game turned.

Keep reading

How RunsLeft analyzes games

Standard content on this page comes from the MLB Stats API. The pitching analysis describes how the game was pitched — the starter's line, the bullpen sequence and each arm's role (opener, bulk, setup, closer), pitch counts as a fatigue signal, and the leverage context where the game turned. Reliever roles are inferred from how the manager used each arm up to that date. It describes structure and constraints; it does not grade the manager.

Read the full methodology.