I was going to post exactly the same thing. Late hockey is the worst on the sleep schedule.Late hockey games were the worst for me. Sometimes the games wouldn't start until 10:00 so it's well after 1:00 before I'd get home and usually after 3:00 before I could fall asleep. I used to have the same problem with running, but I've juggled my schedule so that I workout right after work and that seems to help.
It's entirely possible that the trouble falling asleep and the exercising are not related.I PT right when I get home, in the heat of the day. As tired as I am at bedtime one would assume easy sleepins.