This is a photo I took at a Pop Warner football game (9-10 yr olds) this fall. I'd like to get some feedback on the photo. Thanks!

Canon 40D, EF100-400mm f/4.5-5.6L IS USM

Exposure: 1/2000 sec at f/5.6

Mode: Action (normally I shoot manual, but was experimenting)

ISO 400

Focal Length: 330mm, 80% crop