2026 Spring Baseball for 1st through 8th graders (A Divisions) - Spring 2026

Naperville Little League is for boys and girls in 1st grade through 8th grade who wish to participate in our baseball programs.  Games will start the second half of April and regular season games will conclude mid-June.  For those teams that make the playoffs (Supreme A, Majors A and Junior divisions) city championship is scheduled for June 27, 2026, pending weather delays.

You will hear about team placement approximately mid-April and practices will start around this time.  Managers will determine practice days and times.

Click here to determine your player's league before you register.

Click here to see our field locations for games.

Registrations received (or registrations not paid) after 11pm on March 15, 2026, is an extra $50. Registrations received (or not paid) after 11pm on March 15, 2026, will be accepted on space availability.

Refunds on or prior to March 15, 2026, will be granted, less a $50 processing fee. No refunds will be processed after March 15, 2026.

Click here for 2026 Rookies A (1st grade) registration details.

Click here for 2026 Rookies AA (2nd grade) registration details.

Click here for 2026 Supreme A (3rd grade and 4th grade) registration details.

Click here for 2026 Majors A (5th grade and 6th grade) registration details.

Click here for 2026 Junior (7th grade and 8th grade) registration details.

Anyone volunteering to coach, manage, assist with our program must register as a volunteer.  Click here to register as a 2026 NLLB Volunteer.

Questions?  Contact Lisa O'Rear, lorear@nllb.org or 630-420-9020.

2026 Sandlot Baseball for Pre-K and Kindergartners - Summer 2026

Sandlot Baseball (coach pitch sponge ball) is for kids pre-k and kindergarten boys and girls during the 2025-2026 school year.  We will play a total of 8 games. We will start by playing two games on Saturday afternoon, June 6 and June 13. Starting mid June there will be two games per week, one game during the week and the second game on Saturday afternoon.  The season will conclude no later than July 12 and no games will be played July 4. You will hear about team placement mid-May and practices will start around this time.  Managers will determine practice days and times. 

What are the benefits of Sandlot Baseball?

• Expertly designed for pre-k and kindergartners
• Lighter equipment and baseball diamonds (dirt infields)
• Fun, fast-paced games
• Sign up as an individual or as a team!

Click here for further details on Sandlot Baseball.

Click here to determine your child's league before registering.

Click here to see our field locations for games.

Anyone volunteering to coach, manage, assist with our program must register as a volunteer.  Click here to register for a 2026 NLLB Volunteer.

Registrations received (or registrations not paid) after 11 pm on May 10, 2026, is an extra $25. Registrations received (or not paid) after 11pm on May 10, 2026, will be accepted on space availability.  Refunds on or prior to May 10, 2026, will be granted, less a $25 processing fee. No refunds will be processed after May 10, 2026.

Questions?  Contact Director of Operations, Lisa O'Rear, lorear@nllb.org or 630-420-9020 or Sandlot Director, AJ Demarco, ajdemarco@nllb.org or 630-596-7947.

2026 Challenger Baseball brought to you by Molex - Spring 2026

Challenger Baseball is an adaptive baseball program for children with physical or intellectual challenges. Open to boys and girls grades 1 -12 (and students under 23 enrolled in a school district program), the league serves Naperville and surrounding areas. Each challenger player is paired with a buddy, who assists on the field, helping to develop skills and create meaningful relationships. Games are held on Saturdays starting with a 30-minute warm-up and practice, followed by 1-1.5 hours of game play, with flexible innings to ensure an enjoyable experience for all participants.  All games are held at Dupage River Sports Complex on Field 5 (turf field) in Naperville.  Games will be held in the afternoon on the following dates:

In the event of rainout on a Saturday, we will attempt to make up the game on Sunday, time TBD. Click here to determine your player's league before you register. Anyone volunteering to coach, manage, assist with our program must register as a volunteer.  Click here to register for a 2026 NLLB Volunteer.

Questions?  Contact Lisa O'Rear, lorear@nllb.org or 630-420-9020 or Shawn Greene, sgreene@nllb.org

2026 Umpire Registration - Annual 2026

The NLLB umpire program is designed to start umpires off at the Rookie levels (1st/2nd grade baseball) and allow them to progress to higher levels. 

A child must be 12 years old by August 31, 2026, to umpire for Naperville Little League Baseball. Please do not register your child as an umpire if they are not 12 years old by 8/31/2026.  Umpires under the age of 18 must be registered by a parent.

Umpires who will be 18 years of age and older prior to October 31, 2026 must complete volunteer registration and submit to a background check. Click here to complete registration.

Umpires are required to attend training in order to umpire with NLLB.  Click here for training dates and further information about becoming a NLLB Umpire.

Questions?  Contact Stefan Rand srand@nllb.org

2026 NLLB Sponsorship - Annual 2026

Thank you for your interest in sponsoring Naperville Little League.  Since 1952, Naperville Little League has been committed to the goal of providing an outlet of healthful baseball activity and training under good leadership in an atmosphere of wholesome community participation. The programs we offer are dedicated to helping 1st graders through 8th graders become good and decent citizens. These programs strive to inspire children with an awareness and fondness of community. Naperville Little League provides every child the chance to be a team member and develop both skills on and off the field of play. Our boundaries encompass all the schools in districts 203 and 204, including children in Naperville and parts of Bolingbrook, Lisle and Aurora.

How many participants are there?  Naperville Little League has roughly 1500 athletes in our regular season, which runs from early April to late June, including playoffs.  Our fall season runs in September and October, with roughly 700 athletes participating.

There are various sponsorship levels in which you and your business can select from, click here for details.

Questions?  Contact Lisa O'Rear, lorear@nllb.org, 630-420-9020.

2026 NLLB Volunteer Registration - Annual 2026

Little League International requires a YEARLY background check for adults (ages 18 and older) who volunteer in our program.  This includes managers, coaches, parents who help with practices/games, individuals who help in the office, adult umpires, etc.  

Once you complete this process you will receive a background check from JDP (within 5 days).  Once you complete the background check and are cleared, we will move you to our Member in Good Standing (MIGS) list for the 2026 year.

As a reminder, Little League International requires all volunteers to perform YEARLY  Abuse Awareness Training.  Here is the link for the training:  https://www.littleleague.org/university/articles/abuse-awareness-training-course/

Please click here to determine your league before proceeding.

Questions? Contact Lisa O'Rear, lorear@nllb.org.