LONDON -- The Detroit Lions have the top-ranked defense in the NFL and after two weeks outside the top 10 of the ESPN.com Power Rankings, the Lions are back pushing for a spot among the elite in the league.

The Lions are up to No. 10 this week, the fifth-highest team in the NFC and the second-highest team in the NFC North behind Green Bay, a team on a tear since losing to the Lions in Week 3.

Detroit knows how close it is, though, to being even better than its 5-2 record. The Lions are still No. 1 in the NFL in two categories: defensive QBR (31.8) and total defense (290.3)

"We feel like right now we're in a good position," safety Glover Quin said. "Obviously, we feel like we could be undefeated. We've left some games out there, and we still haven't played a total, total game. So we always feel like no one can beat us if we don't beat ourselves and if we play our game, it's going to be hard for a team to beat us .

"With the weapons we have on offense, the guys we have on defense and our special teams, we feel like we have a complete team."

This is what the Lions are trying to continue in London on Sunday when they face Atlanta at Wembley Stadium.

Just a note -- due to travel to London and the scheduling of events here, my power rankings ballot returns next week.