From 2000 to 2003, the network expanded its offerings to include alternative professional football and rebranded the block as TNN Sports.

From 1991–2001, TNN aired the RaceDay magazine show on Sunday mornings, anchored first by Pat Patterson and later by Rick Benjamin.

In 1995, the motorsports operations were moved into the industrial park located at Charlotte Motor Speedway in Concord, North Carolina, where TNN had purchased a controlling interest in World Sports Enterprises, a motorsports production company, from WSE's founder Ken Squier.

TNN's ties to CBS allowed it to carry CBS Sports' run overs, which happened during a NASCAR Busch Series race at Texas Motor Speedway in 1999; the 1998 Pepsi 400 was also moved to TNN when the race was postponed from the then-traditional July date to October 17, 1998, as a result of the 1998 Florida wildfires.

In 2000, as a result of a new television deal with Fox, NBC, and TBS (later moving to TNT) beginning with the 2001 season, TNN (and CBS) lost broadcast rights to NASCAR after nearly ten years of live coverage; not to mention TNN's tape delay coverage of NASCAR in the 1980s on American Sports Cavalcade.

The loss of Arena Football, the XFL, and motorsports coverage, as well as the network being rebranded to Spike TV, resulted in the end of TNN Sports in 2003.