GREENSBORO, N.C. -- Seth Greenberg told his Virginia Tech players something special would happen for them against Florida State.

When it was over, the coach had tears rolling down his cheeks while the Hokies celebrated around him on the court after a stunning finish.

Erick Green hit the go-ahead jumper with 4.7 seconds left, while Derwin Kitchen's desperation shot at the buzzer was waved off as Virginia Tech edged the Seminoles 52-51 in the quarterfinals of the Atlantic Coast Conference tournament Friday night.

On a day that began with North Carolina rallying from 19 down in the second half to beat Miami with a buzzer-beating layup, the Hokies capped the four-game schedule at the Greensboro Coliseum by rallying from 11 down to set up a replay-reviewed finish that fans of either team won't soon forget.

"I talked to them before the game about resiliency and perseverance," Greenberg said. "They took it to a little bit of an extreme, but that's who they've been. They haven't made excuses. They just play."

The sixth-seeded Hokies (21-10) entered the tournament hoping to bolster their NCAA tournament chances, which appeared solid after a resume-enhancing win against Duke two weeks ago only to become shaky again after losses to Boston College and Clemson to close the regular season.

Now they're heading into Saturday's semifinals after two tournament victories with another shot at the fifth-ranked Blue Devils.

Green had made just 1 of 12 shots before taking a feed from Malcolm Delaney and calmly sinking a jumper near the 3-point arc. The third-seeded Seminoles (21-10) called timeout and inbounded to Kitchen, who drove into the right corner and launched a fadeaway over a defender at the horn.

The ball dropped through the net and the officials initially called it good, sending the Seminoles spilling onto the court to mob Kitchen in celebration. Meanwhile, Delaney and Green walked to midcourt with their hands on their heads in disbelief.

But officials soon sent both teams back to their benches while they reviewed whether the shot came in time at the scorer's table. Replays on the scoreboard display were difficult to discern, with Kitchen appearing to have maybe a finger on the ball when the horn sounded.

Virginia Tech's Jeff Allen leaned over with his hands on his knees while TV cameras gathered in front of the Hokies to capture their reaction. Meanwhile, fans for both teams kept chanting and cheering in an agonizing delay of about 3 minutes.