Two-Seam Fastball
A fastball gripped along the two seams, producing arm-side run and slight sink. Slightly slower than a four-seamer but moves more — a sinker is a heavy-sink two-seamer.
Why "Two-Seam Fastball" Matters
Understanding two-seam fastball helps you follow pitching situations during a baseball game. Pair this with our rules guide, positions overview, and the full baseball glossary.
Related Pitching Terms
- Ace
The best starting pitcher on a team's roster, typically the one who starts on Opening Day and in crucial playoff games. - Balk
An illegal motion by the pitcher with runners on base, resulting in all runners advancing one base. Common causes includ - Bullpen
The area where relief pitchers warm up, and also a collective term for a team's group of relief pitchers. - Changeup
An off-speed pitch designed to look like a fastball but arrive 8-12 mph slower, disrupting the batter's timing.