Auto Racing
Baseball
Basketball
Boxing
Cycling
Figure Skating
Football (Soccer)
Football (American)
Canadian Football League
Golf
Men's Golf
Women's Golf
Harness Racing
Ice Hockey
Skiing
Tennis
General sporting events
Events
Births
Deaths
... until one finds the "rolling" point, but the gyro will also be accelerated to a smaller extent by the slipping friction. The device is covered by US patents ...