A 3 year-old? That's crazy! Was he/she reasonably fast? Or just filled a lane? (If the latter, I guess it's better than not having a team to enter.)
Our team swam a 5 year-old in 8&U free at last week's A-meet. That was due to a lot of people being on vacation. We definitely don't have any 3 year-olds who could swim a full length.