Rules per Senior Softball-USA (SSUSA) official rules. View the source (verified October 9, 2026).
Barrel cap: 2.25 in
Senior Softball-USA (SSUSA) 40+ Masters requires a bat marked SSUSA (senior slowpitch). The barrel may not exceed 2.25 in. Typically ages 40-99.
§12.2: a player must turn 40 during the calendar year to play the 40-Masters divisions. 2026-27 SSUSA Rulebook §3.4(3): bats introduced after 2013 must appear on the SSUSA Approved Bat List, and effective Nov 1, 2023 newer bats must carry the SSUSA/NTS logo; older bats must say SSUSA approved (or carry the SSUSA logo) with 1.21 BPF or lower marked. §3.4 B: max 34 in / 38 oz. Barrel diameter is not set in the SSUSA book, which defaults to the USA Softball rulebook for anything it does not cover (2-1/4 in). A bat marked 'Exceeds 1.21 BPF' is never legal. Pre-2014 1.21-BPF and ASA 2000/2004-stamped bats are also legal but are not modeled in v1.
Barrel cap: 2.25 in
Senior Softball-USA (SSUSA) Seniors (50+) requires a bat marked SSUSA (senior slowpitch). The barrel may not exceed 2.25 in. Typically ages 50-99.
§12.2: a player must turn 50 during the calendar year for the Seniors divisions (age groups 50+ through 80+ per §13.2(4)). 2026-27 SSUSA Rulebook §3.4(3): bats introduced after 2013 must appear on the SSUSA Approved Bat List, and effective Nov 1, 2023 newer bats must carry the SSUSA/NTS logo; older bats must say SSUSA approved (or carry the SSUSA logo) with 1.21 BPF or lower marked. §3.4 B: max 34 in / 38 oz. Barrel diameter is not set in the SSUSA book, which defaults to the USA Softball rulebook for anything it does not cover (2-1/4 in). A bat marked 'Exceeds 1.21 BPF' is never legal. Pre-2014 1.21-BPF and ASA 2000/2004-stamped bats are also legal but are not modeled in v1.
Not sure which bat fits your player?
Find their size and legal bats