LEWISTON, N.Y. (AP) — Terrell Ard Jr. rebounded a missed free throw between two defenders and found Carmelo Pacheco for a catch-and-shoot 3-pointer in the final seconds to lift Mount St. Mary’s to an 84-83 win over Niagara on Friday night.Xavier Lipscomb went to the free throw line with the Mountaineers trailing by three, 83-80,…