Brooklyn Nets center Jason Collins warms up prior to an NBA basketball game against the Los Angeles Lakers, Sunday, Feb. 23, 2014, in Los Angeles. Collins is set to become the NBA's first active openly gay player. He signed a 10-day contract with the Brooklyn Nets earlier Sunday and was to be in uniform for their game in Los Angeles against the Lakers. The 35-year-old center revealed at the end of last season he is gay, but he was a free agent and had remained unsigned. (AP Photo/Mark J. Terrill)