Bullpen

The bullpen refers to both the area where relief pitchers warm up during a game AND the collective group of relief pitchers on a team's roster.

The Physical Bullpen

The bullpen area typically includes:

• Two pitching mounds (for home and away teams)
• Benches for waiting relievers
• A catcher's area for warm-up throws
• Located beyond the outfield fence or in foul territory

Origin of the Term

Several theories exist for why it's called a "bullpen":

• Bull Durham tobacco: Ads were often on outfield walls near warm-up areas
• Detention area: Like a pen for unruly bulls
• Civil War: Holding area for prisoners

The Pitching Staff Bullpen

When referring to pitchers, the bullpen includes:

Key Roles

• Closer: Pitches the 9th inning with a lead
• Setup man: Pitches the 7th-8th innings
• Middle relievers: Bridge to late-inning arms
• Long reliever: Available for multiple innings
• LOOGY/ROOGY: Specialists for left/right-handed batters
• Mop-up: Pitches in blowouts

"Going to the Bullpen"

When a manager "goes to the bullpen," they're bringing in a relief pitcher to replace the current pitcher. This decision considers:

• Pitcher fatigue
• Matchups (lefty/righty)
• Score and situation
• Tomorrow's game

Bullpen Games

In modern baseball, some teams use "bullpen games" where multiple relievers pitch instead of a traditional starter.