Within a five-minute span between the third and fourth quarters, Howard threw a 20-yard touchdown pass to Korey Robertson and a 48-yard TD strike to Quez Watkins. Smith capped the rally with his scoring run as Southern Miss (3-2, 1-1 Conference USA) took a 28-13 lead.
Howard was 15 of 20 for 212 yards passing. Smith ran for 178 yards on 17 carries.
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Tulsa QB Luke Skipper is stripped from behind by Temple's Sam Franklin and teammate Chapelle Russell recovers it to seal the win.
Tulsa's Corey Taylor II runs in a five-yard touchdown to shrink Tulsa's deficit to 28-17.
Down 28-10 early in the fourth, Cooper Edmiston intercepts Temple QB Anthony Russo to begin a Tulsa scoring drive.
Tulsa QB Luke Skipper is stripped and sacked by DE Quincy Roche who recovers the fumble and scores a 50-yard touchdown.
Anthony Russo connects with Randle Jones on a 41-yard gain and later tucks it and runs for a 1-yard touchdown and a Temple lead.
Auburn coach Gus Malzahn confirmed Thursday that wide receiver Nate Craig-Myers has decided to transfer. He's the fourth player to leave the program and the second this week.