Martin Seiferth added 13 points and eight rebounds for the Eagles (4-11, 2/3 Big Sky), and Thomas Reuter had seven assists. Eastern Washington committed 19 turnovers and shot just 8 of 20 from the free-throw line, but overcame that by hitting 8 of 17 3-pointers and shooting 50 percent overall from the field.
DeWayne Russell led Northern Arizona (5-10, 2-3) with 17 points, and Michael Dunn had 11.
The Lumberjacks scored the first seven points of the game before the Eagles rallied and took the lead at 16-15 on a jumper by Jois. Chiverton later added two 3-pointers and three free throws during a 16-1 run that put Eastern Washington ahead 32-18 with 4:18 left in the first half.
The Eagles' lead reached as many as 25 points in the second half.
High school junior Zach Brown, a 7-footer from Miami, has rescinded his commitment to UConn, sources told ESPN.
Reserve center Akolda Manyang has been charged with felony aggravated assault after being accused of punching a man in the face without provocation.
ESPN college basketball reporter Andy Katz discusses the need for the Pac-12 putting in place rules on that would prohibit storming the court after a win.