According to pro-football-reference.com, there was no active player on the Kansas City Chiefs roster who wore number 20 in 1998.
Jamaal Charles is number 25 on the Kansas City Chiefs.
Jeff Allen is number 71 on the Kansas City Chiefs.
Alex Smith is number 11 on the Kansas City Chiefs.
Eric Kush is number 64 on the Kansas City Chiefs.
Tyler Bray is number 9 on the Kansas City Chiefs.
Frank Zombo is number 51 on the Kansas City Chiefs.
Demetrius Harris is number 47 on the Kansas City Chiefs.
Anthony Sherman is number 42 on the Kansas City Chiefs.
Anthony Fasano is number 80 on the Kansas City Chiefs.
Donnie Avery is number 17 on the Kansas City Chiefs.
Malcolm Bronson is number 41 on the Kansas City Chiefs.
Dustin Colquitt is number 2 on the Kansas City Chiefs.