Now in only his second season, Greenberg has a ticket to the biggest dance of all.
On Saturday, Radford beat Virginia Military Institute, 108-94, to win the Big South Conference Tournament and earn an automatic bid into the NCAA Tournament.
The Highlanders (21-11) are going dancing for only the second time in school history.
"It's a great feeling," said Greenberg, whose team finished 10-20 last season. "We took over a program that had been struggling.
"We improved some the first year and then took a quantum leap in Year 2. It's great for me personally, but it's even more rewarding to see the effect [making the NCAA Tournament] has had on the school, the students, the community and the kids on our team."
Greenberg has come full circle. It just took 30 years to complete the loop.
After finishing his playing career at American University in Washington, Greenberg became an assistant at American with an eye toward becoming a college head coach.
Things were moving along nicely when he moved to Saint Joseph's University in 1978 to work with Jim Lynam. Greenberg was on the staff of two NCAA teams at St. Joe's, including the one that made a run to the Elite Eight in 1981.
"At 30 years old, I was a viable Division I head-coaching candidate," said Greenberg, 53. "I had a few interviews."
But when Lynam took over the Clippers in 1983-84, Greenberg went with him to the NBA as an assistant.
"I thought being a NBA coach was what I should do," he said.
The road took another turn in 1989, when Greenberg joined the Portland Trail Blazers as player personnel director. He remained in Portland until 1995.
"You never know how things work out," Greenberg said. "Suddenly, I was in the management end."
Just as suddenly, after one season with the Sixers, he was out of the NBA.
