Rocket Mortgage FieldHouse seats 19,432 people in its basketball configuration and up to 18,926 for ice hockey , making it one of the largest arenas in the NBA by seating capacity . It is a frequent site for concerts and other athletic events such as the men 's and women 's basketball tournaments of the Mid-American Conference ( MAC ) , hosting the men 's tournament since 2000 and the women 's tournament since 2001 . It has also been the host venue for the 2007 NCAA Women 's Division I Basketball Final Four , opening and regional semifinal games in the NCAA Division I Men 's Basketball Tournament , the U.S. Figure Skating Championships in 2000 and 2009 , and the 2016 Republican National Convention
2016 Republican National Convention
2016 Republican National Convention
Rocket Mortgage FieldHouse