CLEMSON — Tajh Boyd and Logan Thomas know each other well. They are two of six ACC starting quarterbacks who call Virginia home.

They were also once teammates.

In the 2008 Army All-American game, Boyd threw to Thomas, who was then the nation’s top-rated tight end.

Virginia Tech had other plans for the 6-6, 260-pound Thomas when he arrived to campus. The Hokies moved Thomas to quarterback thanks to his athletic gifts and powerful right arm. In two seasons as a starter, Thomas has thrown for 31 touchdowns passes against 18 interceptions. He threw for 3,013 yards last season.

Clemson coach Dabo Swinney noted Thomas is one of the most physically gifted quarterbacks in the ACC and one of the foremost concerns for the Clemson (5-1, 2-1 ACC) when it hosts Virginia Tech (4-3, 2-1) at noon Saturday.

Clemson has allowed 13 passing plays of 30 yards or more this season, which ranks 105th in the country.

“Their quarterback, we are familiar with him,” Swinney said. “He’s athletic and his arm is strong. He threw the ball all the way across the field against Duke for a touchdown, he’s strong. They are balanced, but it all starts with the quarterback.”

Thomas has his critics, who scoffed at the notion he could be another Cam Newton, but he has received a first-round grade from some NFL draft analysts. Thomas came on after a slow start to the season last year. He struggled again early this season as Tech replaced eight offensive starters, but Thomas has combined to throw for 600 yards and rush for 70 in Tech’s last two games.

Virginia Tech quarterbacks coach Mike O’Cain placed a phone call to former Clemson defensive coordinator Kevin Steele after the season.

The reason for the call? O’Cain wanted to know if Clemson had stolen Virginia Tech’s signals last season. Clemson’s defense struggled for much of the year but had the Hokies’ number. For the record, Steele said Clemson did not have the Hokies’ signs.

Clemson receiver Martavis Bryant (groin) and tight end Brandon Ford (ankle) are expected to play Saturday. Clemson reported no new injuries this week.