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San Mateo National Little League

This page includes information on each of our divisions and corresponding age group for each division. 

Juniors (54/80) Division

Baseball Ages: 14 & 13

Little League fun, developmental, and recreational baseball does not need to end at age 12! In fact, just the opposite! 

Juniors features a mid-sized field (80’ bases, 54’ pitching, same as USSSA) which fits this age group. This size makes for a dynamic game, and is a great stepping stone to the full-sized field.  Teams from different leagues across District 52 play against each other. Juniors offers traditional rules baseball, including lead-offs, unlimited steals, pick-offs and balks.  

If you love to play baseball, and want to have fun playing with your friends and represent your city, Juniors is for you!

The schedule is similar to Majors - two games per week, one during the week and one on the weekend. Juniors will have a regular season tournament at the end, and then an all-star tournament for those selected. 

Majors Division

Baseball Ages 12, 11 and 10

Division Background: This is the most competitive division of Little League, with standings and playoffs. Regular season includes 14 - 18 games, with games played twice per week (one weekday and one weekend game). Teams practice twice per week (one field practice and one batting practice).

Additional divisional age information:
  • Baseball age 10 - 12 year-olds are required to complete an annual player evaluation (in early January) for coaches and the league to assess their skills for appropriate division placement.
  • Baseball 12 year-olds play in the Majors division (unless if the player is deemed to be at a high risk of injury based on their stage of development by the Player Agent and independent evaluators).
  • Baseball Age 11 & 10 year-olds are eligible to be selected into either the Majors division or the PCL / AAA divisions based on their stage of development.
  • Players not selected to a Majors team, are then placed into the PCL player pool, and then players not selected to a PCL team are placed in the AAA player pool.
  • Baseball Age 10 year-olds, while eligible to be selected in the Majors division, generally play in either PCL or AAA. 10 year-olds that are selected to Majors are highly advanced developmentally. 
Draft Division: Yes 

Minors Divisions

PCL / AAA Division

Baseball Ages 11, 10, 9

PCL & AAA Division Background:
  • These are competitive divisions with standings and playoffs.
  • Regular season includes 14 - 18 games, with games played twice per week (one weekday and one weekend game). Teams practice twice per week (one field practice and one batting practice).
  • Whether we offer both PCL and AAA, or just AAA, is an annual determination made by the league Board based on the player pool at these ages and the skill profile across that pool.
  • SMNLL's ultimate intention for these divisions, and across our league, is that our players play in divisions that best fit their stage of development and play with players that are similarly skilled and not always force progression through our divisions to enable greater engagement and playing time (both in totality and across positions).
PCL
  • In 2024, SMNLL added a division for players within this age range, the PCL division, which other leagues locally and across the country have offered, and is geared to players in this age level that are more advanced in their skills and development and are on the cusp of the Majors division (highest level of competition in Little League).
  • The division promotes a higher level of competition and emphasizes more of the standard rules of Little League baseball than the AAA division, and is geared toward the players that are evaluated to be ready for that.
  • Some Little League rules are modified for the PCL division, such as no stealing of home (forcing runs to be scored based on balls put in play as much as possible), and lower pitch count limits.
AAA
  • While the rules between PCL and AAA are largely the same, there are a few developmentally focused rule modifications for the AAA division. The primary difference is a modified kid-pitch format for the first half of the season to allow for players to continue to develop on the mound and assists with defensive development, maintain a good pace play, through having a high-frequency of balls hit into play by not allowing batters to walk. If a pitcher throws 4 balls in an at bat, a coach will come in to pitch to finish the at-bat.
  • The modified kid-pitch format transitions to a full kid-pitch format, which allows walks, during the second half of the season (including playoffs).
Additional divisional age information:
  • Baseball age 9 - 11 year-olds are required to complete an annual player evaluation (in early January) for coaches and the league to assess their skills for appropriate division placement
  • Baseball Age 11 & 10 year-olds are eligible to be selected into either the Majors division or the PCL / AAA divisions based on their stage of development. Players not selected to a Majors team, are then placed into the PCL player pool, and then players not selected to a PCL team are placed in the AAA player pool.
  • Baseball 9-year-olds are eligible to be selected into either the PCL / AAA divisions or the AA division. Players not selected to a PCL / AAA team, are then placed into the AA player pool.
Draft Divisions: Yes

AA Division

Baseball Ages 9, 8, 7

Division Background:
  • This division uses a spring-loaded pitching machine to provide a step-up from the Coach-Pitch environment of the Single A division, while also enabling a high frequency of balls being put in play to promote as much defensive and baserunning development as possible during the first half of the season. During the second half of the season (including playoffs) the division transitions to a modified kid-pitch format, which assists players develop their skills, maintain a good pace play, and ensure a high-frequency of balls hit into play, through not allowing batters to walk. If a pitcher throws 4 balls in an at bat, a coach will come in to pitch to finish the at-bat.
  • This division is where scorekeeping, standings, and playoffs are introduced to players in this age group.
  • Some Little League rules have been also  modified for this division (e.g., no stealing of bases, one-base on an overthrow, etc.) to continue to foster player development through allowing for players to attempt to make plays and not having mistakes have significant negative consequences (e.g., players taking multiple bases on an errant throw, not stealing bases on catchers who are just learning the position, etc.).
  • AA teams typically play a 8 - 10 game schedule, with one weekend game (typically on Sundays) per week, usually at Martens field or Los Prados.
  • AA teams generally practice twice per week (one field practice and one batting practice), usually with one practice on a weekday and one on Saturday, but timing is at the discretion of the coaches and field / batting cage availability.
Additional divisional age information:
  • Baseball 9-year-olds are required to complete an annual player evaluation (in early January) for coaches and the league to assess their skills for appropriate division placement, and are eligible for selection in either the PCL / AAA divisions or the AA division.
  • Baseball 9-year-olds not selected to the PCL / AAA divisions will be included in the AA division player pool for and selected through a draft process.
  • Baseball 7 and 8-year olds who are deemed by coaches and independent evaluators to be skilled enough are selected to a AA team through a draft process. Players at these ages that are not selected will be placed on a Single A team.
Draft Division: Yes

Single A Division

Baseball Ages 8, 7, 6

Division Background:
  • This is the next division after T-Ball and is a Coach-Pitch division.
  • Many Little League rules are modified / simplified in this division to promote player development and learning the game (e.g., no base stealing, limits on number of batters per inning, etc.).
  • There are no standings or playoffs for this division as its a developmental focused division. 
  • Teams are formed through teammate requests and/or by school to the greatest extent possible (we do our best, but no guarantees).
  • Teams typically play a 10 - 12 game schedule, with one weekend game (typically on Sundays) per week, generally at Martens South or Los Prados.
  • Single A teams typically practice 1 - 2 times per week (either during a weekday or on Saturdays at the discretion of coaches). 
Additional divisional age information:
  • Baseball 7 and 8-year-olds who choose to tryout for the AA division (machine pitch transitioning to kid-pitch during the season), but are not selected to a AA team, will be placed on a team in the Single A division. 
  • Baseball 6-year-olds who have played a year of T-Ball can choose to play in this division as well.
  • We recommend 6 year-olds who have never played organized baseball before to go through a year of T-Ball.
Draft Division: No

T-Ball Division

Baseball Ages 6 & 5

Division Background: T-Ball serves as an introduction to baseball and is aimed toward learning basic fundamentals (hitting, throwing and catching) in a fun environment. Additional information on T-Ball:

  • There are no scores, standings or playoffs for T-Ball given the introductory nature of the division.
  • Teams are formed through teammate requests and/or by school to the greatest extent possible (we do our best, but no guarantees)
  • Team's typically play an 8 - 10 game schedule during the Spring on Sundays at Martens South or Los Prados Park.
  • Team practices or other activities are not mandatory and at the option of the coaches.
Draft Division: No

Wiffle Ball

Baseball Age 4

Division Background:

  • The Wiffle Ball division is aimed at providing preschool-aged kids an introduction to baseball, team concepts, and our community.
  • Teams are formed through buddy requests and/or by school to the greatest extent possible (we do our best, but no guarantees)
  • The season is comprised of 6 - 10, 30 minute games, usually with a 30 minute practice before hand for coaches to teach the basics (e.g., baserunning, how to hold a bat, throw, etc.).
  • Players use a plastic bat to hit a Wiffle Ball off a tee and run the bases. 
  • No scores are kept and there are no season standings as this is an introductory division.
  • Parent involvement is required.
Draft Division: No

San Mateo National Little League

1500 Marina Ct 
San Mateo, California 94403
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