As a media relations employee for a Division I athletic department, I have been tracking sports charters for a long time… including those I have flown on.
Sports charters are easy to do as you long as you have the schedules. Most teams head out immediately after the game, so on any given night, you can track from game site to home or game site to game site.
I find it best to track the city routes as opposed to flight numbers because they often change. Some charter companies alone (Champion, Miami Air) use a 9XXX number for deadheads and the XXX portion for the passenger part. Also, PACE/Hooters Air runs a lot of team charters as does Falcon (FAO) and Pan Am. I am a subscriber of AirNAV, so I can select all the planes from a certain company.
Basketball teams usually charter a couple of small planes (King Airs are popular). Check other smaller airports.
A few of the ones I choose:
The Los Angeles Kings use a PACE/Hooters Air plane.
Louisiana-Monroe football uses Champion; Troy and Florida International use Falcon.
Most SEC schools use Delta.
LCK (Rickenbacker in Columbus) handles Ohio University football and many Ohio State opponents. Check UNI (Athens, Ohio) for longer basketball trips, TOI (Troy, Alabama) on Jan. 31 and Feb. 1 (Jonesboro, Ark.)
Let me know if you need any other help.