Before they become pros and part of the NBA, many players were teammates in college and high school.
It's really tough to create some list of top 10 or 20, but I will include some interesting teammates and NBA players. Let me know if you want to add someone one the list.
Anthony Davis and Michael Kidd-Gilchrist (Kentucky Wildcats)
DeMarcus Cousins, John Wall and Eric Bledsoe (Kentucky Wildcats)
Al Horford, Corey Brewer and Joakim Noah (Florida Gators)
Shane Battier and Carlos Boozer (Duke)
Jerry Stackhouse and Rasheed Wallace (North Carolina)
Juwan Howard, Jalen Rose, Chris Webber (Michigan Wolverines)
Christian Laettner and Grant Hill (Duke)
Joel Embiid and Andrew Wiggins (Kansas Jayhawks)
Alonzo Mourning and Dikembe Mutombo (Georgetown Hoyas)
Clyde Drexler and Hakeem Olajuwon (Houston Cougars)
Kevin Love and Russell Westbrook (UCLA)