The competition is open to Little Leaguers® league age 9-12 years old who are currently registered and meet all eligibility requirements within their chartered Little League for the 2025 season. The baseball competition is open to Little Leaguers league age 9 – 12 years old and the softball competition is limited to female Little Leaguers aged 9 – 12 years old. A participant’s league age is determined per Little League Baseball and Softball guidelines.

There is no minimum or maximum of the number of participants. Participants are only eligible to participate in ONE local competition.

Local competitions will be held right at local Little League® parks from February 25, 2025, through June 22, 2025*.

*Dates are subject to change

Information regarding the Regional Finals and Championship events of the T-Mobile Little League® Home Run Derby™ will be shared at a later date. Host League Officials will be notified directly if their local competition winner has advanced.

Once all local competitions have been completed and results have been verified, the T-Mobile Little League® Home Run Derby™ team will directly contact any individuals (and their league) that have advanced to the next round of the competition. Please note, winning a local competition does not immediately qualify your Little Leaguer for any advancement opportunities. Information regarding the next stages of the T-Mobile Little League Home Run Derby will be announced in the coming months.

You can use the results of the home run competition as long as they fall within the
T-Mobile Little League® Home Run Derby™ event rules. Leagues will still need to register and submit all results through the website portal.

Participating leagues will need a baseball/softball field with either a permanent fence, temporary fence, chalk or cone line at the distances of 170’ for baseball and 130’ for softball. These distances are typically shorter than standard fence dimensions. We recommend a chalk line on the field at each distance, cones, or the use of a temporary fence. All equipment including baseballs/softballs will need to be provided by hosting leagues and should meet Little League® specifications.

The League Officer who registers will receive a digital toolkit upon registration approvals, that includes all of the information needed to run a competition including rules, scoresheets, sample social media graphics, and a media advisory template. A physical toolkit will also be sent with the event banner, ball bucket, counter, medal and pins.

Each participating league will receive an A.D. STARR credit thanks to T-Mobile for participating in the 2025
T-Mobile Little League® Home Run Derby™, while supplies last. An A.D. STARR representative will reach out directly to the league’s registered point of contact and will include all steps for how to activate this credit.

*While Supplies Last

Leagues are welcome to live stream their local events so long as they follow all applicable Little League® regulations. New for 2025, step by step guides to live stream your competition, through the GameChanger platform, will be available and can be found directly linked: https://littleleaguehrd.dudasites.com/

Each digital toolkit will include a media advisory template, posters, and sample social media posts to encourage your local sluggers to join! Some other fun ways to drive participation include, but are not limited to, incorporating the T-Mobile Little League® Home Run Derby™ into a pre-existing league event, such as opening day or closing ceremonies, or hosting during a community wide event.

There is no fee associated with participating in the T-Mobile Little League® Home Run Derby™.

Yes. We encourage leagues to host a competition with multiple league participation within the same or contiguous Little League® districts. You must register through the website and identify the hosting league as such during the registration process. You may add and remove leagues in your dashboard at LittleLeagueHomeRunDerby.com.

The upload tool accepts the following formats: jpg, jpeg, pdf. All participating leagues will be required to submit completed scoresheet, participant release forms, and champion photo.

Live arm pitching is preferred, but pitching machines may be used if necessary. The use of side toss is NOT permitted.

Up to 5 of your Little Leaguers® can be in the outfield, but they must allow all balls to land (no catching).

In the first round, it is recommended that the batting order be determined by random draw. In the following rounds, the participant with the lowest total number of home runs will hit first and so on.

Absolutely! We encourage you to share your experience on your league’s social media platforms. When sharing please make sure to use the hashtag #LittleLeaguersSwingBig!

Reach out to your local Little League® officers to receive information about how to sign up for a local competition. If your league officers have not registered, please encourage them to do so!

In order to qualify for the T-Mobile Equipment Donation, leagues will need to submit the following on the league dashboard at LittleLeague.org/HomeRunDerby

• Official score sheet
• Completed participant release forms
• Champion photo and information

All items must be submitted by June 22, 2025 in order to receive this donation. Once submitted and verified by the T-Mobile Little League® Home Run Derby™ team, league donations will then be emailed to your league point of contact.

Each Little League® players can only compete in ONE home run derby. This provides equal opportunity for all participants to advance to the Regional Events.

If a Little Leaguer competes in more than one competition, that athlete is subject to disqualification.