Triche netted 21 points while Southerland and Keita each contributed 15 for the Orange (2-0), who won their home opener.
Syracuse bested San Diego State Nov. 11 on the deck of the aircraft carrier USS Midway in its only previous game.
Jonathon Williams led Wagner (0-2) with 14 points.
Ray Liotta sues skin care company over use of likeness
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