In recent weeks, rumors have been swirling around the sports world that a currently active male athlete from one of the four major sports—baseball, football, basketball, and hockey—was about to come out as gay. Today, we found out who it is: NBA center Jason Collins, in an upcoming cover story for Sports Illustrated, reveals his sexuality to the world. Collins, a journeyman who has played for six teams, is at the tail end of his career—he's 34—and is what is referred to as a "defensive specialist," meaning he doesn't score very much. Nevertheless, this is a significant moment.