The Yellow Jackets (4-5, 3-3 Atlantic Coast Conference) led 20-0 at halftime and 27-0 late in the third quarter before Maryland finally scored on a 16-yard touchdown pass from Petty to Stefon Diggs. Petty also threw a 23-yard TD pass to Diggs on the game's final play, but the injury-depleted Terrapins (4-5, 2-3) dropped their third straight.
Maryland has lost four quarterbacks for the season with injuries, so coach Randy Edsall was forced to turn to Petty, a true freshman signed as a linebacker. The 6-foot-1, 230-pound left-hander ran for 24 yards on 17 carries and completed 9-of-18 passes for 115 yards. He also fumbled twice and threw an interception.
The Yellow Jackets finished with a 401-259 advantage in total yardage, including 205-61 in the decisive first half.
Georgia Tech backup quarterback Vad Lee ran for a pair of 2-yard touchdowns and starter Tevin Washington also rushed for a score, the 34th of his career -- one short of the school and ACC record for quarterbacks held by Joshua Nesbitt.
The Yellow Jackets amassed 370 yards rushing against the nation's fourth-ranked defense against the run (77.6 yards per game before Saturday).
Georgia Tech took a 6-0 lead late in the first quarter when Washington capped a 12-play, 69-yard drive with a 1-yard run. Smith kept the march alive with a 17-yard run on a fourth-and-3 from the Maryland 35.
The Yellow Jackets capitalized on a Petty fumble to make it 13-0 early in the second quarter. After Jeremiah Attaochu recovered the loose ball at the Maryland 33, Smith scored from the 5.
Another three-and-out by the Terrapins followed, and a 17-yard punt gave Georgia Tech the ball at the Maryland 49. Seven plays later, Lee scored for a 20-0 lead.
At that juncture, the Yellow Jackets had a 170-22 advantage in total yards and Maryland still had not picked up a first down.
The Terrapins finally moved the chains for the first time with 6:38 left in the half when Georgia Tech was called for roughing the kicker on a punt.
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Linebacker Myles Jack, who suffered a season-ending knee injury, said Thursday he decided to leave UCLA and enter the 2016 NFL draft because he wants to be compensated for his skills.
The tougher tests await down the road for No. 3 Baylor Bears, but coach Art Briles has seen enough of his Bears to know this is his best team.
A decision has been made that Randy Edsall will not be the football coach at Maryland next season, and discussions are taking place about how and when to separate, a source said Thursday night.
Florida State running back Mario Pender has been released from the hospital but could be given a medical redshirt if he cannot return to the field this season.
Tennessee chancellor Jimmy G. Cheek has issued a statement amid rumors that alleges coach Butch Jones fought and punched senior offensive lineman Mack Crowder during a fall practice session.
With the addition of a few tweaks, UConn football coach Bob Diaco is still planning to bring a rivalry trophy with him to Florida on Saturday when the Huskies play UCF.