12-Team Baseball Single elimination Generator
A working single elimination generator pre-set for 12 baseball teams. Replace the placeholder names, enter scores as you go, print or export. Free, no account.
How the 12-team baseball single elimination bracket is built
12 is not a power of two, so the bracket is padded to 16 slots and the top 4 seeds skip round one with a bye. A champion is decided after 11 games in 4 rounds; add the optional 3rd-place match for one more game.
First-round matchups
Standard seeding puts the strongest seed against the weakest: 8 v 9, 5 v 12, 7 v 10, 6 v 11. Seeds 1–4 wait for round two. List your teams strongest-first in the generator and the seeding is applied automatically.
How long does it take?
With 120-minute games, 11 games take about 22 hours on one diamond and 11 hours on two — but rounds can't overlap, so the last rounds always run one game at a time. Pro's scheduler enforces that ordering when it assigns dates, start times and diamonds.
Baseball rules that affect the schedule
Youth baseball games are usually 6 innings or a 90–120 minute time limit; adult leagues play 7 or 9 innings. Pitch-count rules make rest days between games important for arms.
Tie-breakers: Head-to-head, then runs allowed ratio, then run differential.
Organizer tip: Use the minimum-rest constraint (e.g. 2 days = 2880 minutes) to protect pitchers when teams have thin rotations.