NFL's best active players by jersey number, from 1 to 99
Dominant Digits -- The 10 most popular jersey numbers among current NFL players - ESPN
10 Best NBA Players Who Have Worn The No. 23: Michael Jordan And LeBron James Made History Wearing That Jersey - Fadeaway World
Fact or Fiction: Most iconic number in Giants history
The best player to wear each number in Major League Soccer history, Greg Seltzer
NFL Update] Tom Brady doesn't like the league expanding the use of single-digit numbers. Says it's going to make for a lot of bad football. : r/nfl
Tom Brady rips NFL's new jersey number rule before Cowboys game - Sports Illustrated
Steelers 'Digit Dynasty': Who wore the number best? No.51-75 - Behind the Steel Curtain
Small Army of Code-Breakers Conquers a 129-Digit Giant
History Of Squad Numbers In Soccer, and How They've Evolved - World Soccer Talk
The Best Active NBA Player By Jersey Number: From No. 00 Jordan Clarkson To No. 99 Jae Crowder - Fadeaway World