Mading, a 6-foot-9 forward, committed to the Sun Devils in late December of 2015. At the time, Mading chose ASU over Florida, UConn, LSU and Kansas.
Mading, started his prep career in Florida at The Rock School, but played last season for Bobby Hurley's father at Jersey City (N.J.) St. Anthony.
With this news, Arizona State now has one pledge in the 2017 class. Four-star point guard Remy Martin committed to the Sun Devils two weeks ago.