High School Rules

General Game Play

If a rule is not listed on this page, GSL Tournaments will defer to the MLB rule book also known as “big book rules”.

Click here to download an Official Copy of the MLB Rules Book

All 15U through 18U games will be played on fields with 90 foot bases and a 60 foot 6 inch pitching distance.

Teams are required to register with GSL Tournaments and complete all required documents prior to the start of the tournament.

Teams who are unable to attend a game during the event will be required to take a 7-0 forfeit and will receive no refund.

General Policies

We reserve the right to refuse service to teams.

For all games played during the week, teams are responsible for game balls

Age Restrictions

The age cutoff for GSL Tournaments is May 1st.  Any player with a birthday prior to May 1st must play in that years age division or older.  Example: a player turning 16 on April 30th will be required to play in the 16U division or older.  A player turning 16 on May 2nd may play in the 15U division or older.  We strongly suggest that players try and play with their grad class rather than their age division for recruiting purposes.

Bat Restrictions

All metal bats must be bear the BBCOR stamp and have a ratio of minus 3.  If bats appear to be tampered with they will immediately be removed from the game.

Wood bats are legal to use in all events.  In addition to solid wood bats players may use the following bats: Baum bats and composite bats – must not contain any metal on any part of the bat.

There is no weight to length ratio requirements for wood bats.

Pitching Restrictions

There are no pitching restrictions for GSL High School Tournaments.  How a team uses their pitchers is entirely up to their discretion.  We do suggest that teams consider following the USA Baseball Pitch Smart Guidelines when trying to protect the future of their players.

Click here to view the USA Baseball Pitch Smart Guidelines

Time Limits

15U through 18U games will play 7 innings or 2 hours with no new inning, whichever occurs first.

The time starts upon completion of the plate meeting.  It is the responsibility of the coaches to get the start time from the crew chief.

The new inning starts as soon as the third out from the previous inning has been recorded.

In the case that the home team is winning and time is reached while they are batting, the game will be ruled complete.

There is no time limit for championship games unless deemed necessary by the tournament director.

Tied Games

Pool play games will end at the conclusion of the allotted innings or time regardless of the score.  Pool play games will end in a tie if there is no time left.  Example: a 7 inning game is tied 2-2 at the end of 7 innings and there is 15 minutes left on the time limit, this game will be ruled complete and scored as a tie ball game.

Tied games will go down as half a win and half a loss.

If a playoff game is tied at the end of the allotted innings at the time limit, they will start with a runner on second base and one out.  This will continue until there is a winner.

Mercy Rules

2nd Inning3rd Inning4th Inning5th Inning
15 Runs12 Runs10 Runs8 Runs

Seeding and Tie Breakers

  1. Win/Loss record
  2. Head to head (when all tied teams have played each other)
  3. Runs allowed
  4. Run differential (min/max of 8)
  5. Runs scored
  6. Fewest runs allowed in a single game
  7. Most runs scored in a single game
  8. Coin flip
  9. We will never revert back to a previous tie breaker once a tie has been broken

We will offer pool and program protection in the first round of brackets when we deem appropriate.

When ties are involved, teams will be rewarded half a win and half a loss for a tie.  This will help determine seeding.  Example: 2-1 in pool play is the same as 1-0-2.

Batting Order and Substitutions

Teams will be allowed to use EHs and a DH (for any player)

Teams will have the option of batting 9, 10, or their entire roster.  Example: if a team rosters 13 players, they may not choose to bat 11 or 12.  If they choose to bat 10 or the entire roster, all players not currently playing in the field will be scored as an EH which will represent a position the same way a shortstop or centerfield would.

Teams are allowed free defensive substitutions throughout the game.  A player may enter the game at any time defensively without entering into the batting order.  The only time a player must check in and become an eligible substitute is when replacing a player in the batting order.  Example: a substitute may play left field every other inning without actually taken the place of the starting left fielder in the batting order as long as the substitute is never granted an at bat.

All age divisions will allow re-entry one time for the starter.

Courtesy Runners

Teams are allowed a courtesy runner only for their catcher and only when there are two outs in the inning.  This rule is in place to speed up the game and still allow catchers to develop their base running abilities.

There are no courtesy runners allowed with less than two outs and for no other positions than the current catcher.

The courtesy runner must be a player currently not in the batting order.  If a team is batting their entire roster, it will be the last recorded out.

31 Moves

The fake pickoff to third, pickoff to first is not allowed and will be ruled a balk per MLB Rule.


All players, coachers and fans will be expected to conduct themselves in a sportsmanlike manner at all times. Razzing, heckling, taunting and making disparaging remarks to the opposing team and umpires will not be tolerated.  Any player, coach or fan whose conduct is unbecoming or abusive will, at a minimum, be removed from the premises at the discretion of the Tournament Director, Umpire-in-Chief and umpires. Any individual ejected from the game will miss the remainder of the game, plus the next game. If the same person is ejected for a 2nd time, he, or she, is suspended for the remainder of the tournament. Failure to comply will result in forfeiture of the game.


No Games Played Full Credit to any 2020 Event. Will not go into the next year.

1 Game Played $300 Credit to a 2020 event or Refund
2 Games Played $150 Credit to a 2020 event only NO REFUNDS
3 Games Played No Refund or credit
State tournament
1 Game Played $400 Credit to a 2020 event or Refund
2 Games Played $200 Credit to a 2020 event only NO REFUND
3 Games Played No Credit or Refund
Any refund for any tournament where a game has not been played by your organization there will be a $200 admin attached to those per tournament.

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