Greene, a sophomore stepping in with Davis Cheek out with a knee injury, was 7-for-11 passing for 205 yards and two touchdowns and rushed 21 times for 79 yards and another score. Thomas, a true freshman replacing standout senior Malcolm Summers, who has a hamstring injury, carried the ball 27 times for 150 yards and a touchdown and caught two passes for 27 yards and a score.
Skyler Davis sealed the game with a 37-yard field goal with just under a minute left.
Thomas' 22-yard run gave the Phoenix (5-2, 3-1 Colonial Athletic Association) a 21-14 lead at the half. Greene opened the scoring with an 18-yard run and also connected with Corey Joyner on a 60-yard catch-and-run, the longest pass play of the season for Elon.
Aaron Dykes scored on a 5-yard run, his second TD for the Spiders (3-5, 1-4) to tie the game before De'Sean McNair capped a long drive with a 1-yard plunge and Greene and Thomas hooked up for a 30-yard score and a 35-21 lead entering the fourth quarter.
Joe Mancuso also had two touchdown passes for Richmond.
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