Source: Ga. Tech interested in Groh

ATLANTA -- Dave Wommack has been fired as Georgia Tech's defensive coordinator.

Georgia Tech announced on Friday that Wommack will not return for the 2010 season. Coach Paul Johnson says he and Wommack "both agreed" a change was needed after Georgia Tech finished the season ranked 54th in the nation in total defense and 56th in scoring defense.

Wommack was asked if he wanted to stay on the coaching staff in a different position, but he declined, a source told ESPN The Magazine's Bruce Feldman.

"Dave is a good man and a good football coach," Johnson said. "But after speaking to him earlier this week, we both agreed that it was time for a change at that position."

Johnson said the search for Wommack's replacement will begin immediately.

The Yellow Jackets went 11-3 and ended the season ranked 13th but had struggles much of the season on defense. Georgia Tech allowed 24.8 points per game even when helped by the Yellow Jackets' ball-control spread option offense. The Yellow Jackets finished third in the nation in time of possession.

"I think that has to factor in," Johnson said. "If you're playing less possessions, certainly you ought to be giving up less yards or whatever."

According to the source, Johnson would like to run a 3-4 defense and is interested in hiring former Virginia head coach Al Groh.

"I've talked to a lot of people about the position," Johnson said. "I'm not going to get into who I've talked to and who I haven't talked to.

"We'll sit down and try to make the best decision and look and see who I feel like gives us the best chance to have the best defense we can have and go from there. I can assure you nobody has been hired."

Wommack said last week the defense was hurt by injuries.

"I can't sit here and say that it's improved as the year's gone on," Wommack said.

"We're deficient in some areas. There is no question about that. The kids play hard, and they work hard, but there are have been some deficiencies with our defense this year."

Georgia Tech allowed 30 or more points in six games this season.

ESPN The Magazine senior writer Bruce Feldman and The Associated Press contributed to this story.