Which league is considered the Senior league?

Answer 1

The national league

"Senior League" refers to the youth league after "Little League" but before High School. Senior League players are usually between the ages of 13-15 and/or grades 7-9. Most Senior Leagues allow bats larger than the 2.25" Little League approved bat diameter, and bats can be lighter than the High School -3 minimum weight/length, but the bat weight ratio limits vary with the specific senior league organization. For example, Catholic Youth Athletic Association limits grade 7-8 bats to -7 weight ratio (no lighter). So, be careful when shopping for a "Senior League" bat as the rules for different organizations are less consistent than they are for the 9-12 year olds that usually follow Little League rules.