The Trail Blazers were joined by Portland's men and women's soccer team in supporting a push to put marriage equality on the Oregon ballot in 2014.
The two appeared at an LGBT-focused Democratic fund-raiser this week.
The two brothers joined Jimmy Kimmel for a lighthearted interview.
LeRoy Butler was axed from a church speaking engagement because he supported Jason Collins's coming out.
Basketball center Jason Collins came out in a moving commentary in the most recent issue of Sports Illustrated.