The history-making athlete's number 98 Nets jersey is currently the top seller on NBA.com.
The first out active NBA player will wear number 98 with the Nets as tribute to Matthew Shepard, the gay college student whose murder in 1998 fueled the adoption of hate-crime laws.
Collins played 11 minutes for the Brooklyn Nets against the Los Angeles Lakers and was greeted warmly by fans.
A group of athletes spoke at the U.N. about the importance of combating homophobia in sports.
U.K. advocacy group Stonewall launched its new campaign to fight homophobia in sports, called 'Right Behind Gay Footballers.'