Baseball Bat Rules and Selection Guidelines
Starting January 1, 2018, all metal and composite bats used for Baseball Minors AA, Minors AAA, and Majors divisions must have the official USA Baseball stamp to signify that they conform to the new USA Baseball Bat Standard.
Most other national youth and teen baseball programs have also adopted the new USA Baseball Bat Standard for 2018. The new bats first went on sale on September 1, 2017, and have either 2 5/8 inch or 2 1/4 inch barrel diameters. Any metal or composite bat purchased prior to September 2017 will no longer be allowed for use in any Little League Minors AA, Minors AAA, or Majors practice or game.
For Baseball T-Ball, Baseball Minors A, and all Girls Softball divisions, the new USA Baseball Bats are allowed but not required. Older bats with 2 1/4 inch barrels that carry the Bat Performance Factor (BPF) 1.15 (Baseball) or BPF 1.20 (Girls Softball) stamp are allowed for 2018.
For Baseball Juniors, all metal and composite bats must have either the new USA stamp OR a "BBCOR Certified .50" stamp. BBCOR is a bat standard created to govern high school and collegiate play.
Solid one-piece wood bats with barrel diameters 2 5/8 inch or less do not require any stamp and are legal in all divisions of Little League.
Los Altos & Los Altos Hills Little League Bat Length and Weight Recommendations
Our league provides a shared bat for T-Ball teams, but after T-Ball players are expected to have their own bats, or ask to borrow a bat from the coach or a friend on the team. You don't need to buy a new bat every year, and while expensive composite bats can provide a slight advantage for more experienced players, most young players will do fine with an inexpensive aluminum bat. We recommend a 25-inch 12 ounce (drop 13) bat for 5 year-old players, adding about an inch in length for each year of age, and gradually reducing the drop (thereby increasing the weight) as players get older. The guidelines below are approximate - use your judgement if your player is larger or smaller for his/her age.Age 5: 25 inch, drop 13 (12 ounces) Age 6: 26 inch, drop 13 (13 ounces)
Age 7: 27 inch, drop 12 (15 ounces)
Age 8: 28 inch, drop 12 (16 ounces)
Age 9: 28 inch, drop 11 (17 ounces)
Age 10: 29 inch, drop 11 (18 ounces)
Age 11: 30 inch, drop 10 (20 ounces) Age 12: 31 inch, drop 10 (21 ounces)
Age 13: 32 inch, drop 8 (24 ounces)
Age 14: 32 inch, drop 5 (27 ounces) Note: most USA bats with drop 13 and drop 12 for younger players have 2 1/4 inch barrels. USA bats for older players with drop 11 through drop 5 have 2 5/8 inch barrels. Note: BBCOR bats are heavy and intended for kids in high school or about to enter high school. There are no BBCOR bats lighter than drop 3.