LEWISTON, N.Y. — Marvin Prochet and Dominic Robb had double-doubles and Niagara held on for its first conference win of the season 95-90 over Iona on Friday night. Prochet finished with 20 points and 10 rebounds, Robb had 13 points and 10 boards, and Raheem Solomon scored 18 for the Purple Eagles (8-8, 1-2 Metro