Logo for Not-for-profit sports league

We are looking for a clean, crisp, professional yet fun design that can be used on a website, business cards, flyers, etc, and should incorporate team sports, community service and, of course, playground into the design

Playground Champions

Playground Champions is a non-profit sports league (initially in New York City) offering team “playground” sports (e.g. kickball, basketball, touch football, dodgeball) leagues and tournaments with the goal of donating 85% of all league and tournament fees collected to organizations that build playgrounds at schools and community centers throughout New York City.

We will need to use the logo on the website, to print on business cards and letter head, on t-shirts, on print advertising and possibly on footballs and kickballs. 

- Logo should have a crisp, professional feel but be fun
- a playground set and a ball of some sort would be beneficial to see in the design

- nothing that looks like nursery school (e.g. words that are made to look they are are written by a four year old)