Robert McClain returned an interception for a touchdown. Noah Spence had Tampa Bay's only sack, forcing a fumble that led to another TD.
"We definitely can be number one," Ward said. "The talent we have in this room, they work hard and it is everything you need to be a championship defense."
As well as the defense played against the Bears, Koetter cautioned that there's plenty of room for improvement.
"If you look at that second half of last year, they were a dominant defense. In my opinion, they just picked up where they left off," Koetter said. "It wasn't really that surprising to me because we see them every day in practice."

Ward was part of an elite defense that helped the Broncos win the Super Bowl two years ago. He's impressed with his new teammates, and thinks the Bucs have the capability of becoming a dominant unit, too.
"When you've got a dominant defense," the young quarterback added,Wholesale NFL Jerseys, "it opens up every single thing."
Coach Dirk Koetter said the defense essentially took up where it left off last season, when Tampa Bay rebounded from a 3-5 start to finish 9-7.
Maybe it's time an improved defense that keyed the team's season-opening rout of the Chicago Bears gets a little love, too.
The team's first winning record in six years didn't produce a playoff berth, but it heightened expectations for this season.
Winston agreed,NFL Jerseys Supply.
TAMPA, Fla. (AP) — Mention the Tampa Bay Buccaneers, and the first thing likely to come to mind is Jameis Winston and an emerging offense.
Specials teams also did its part to help Winston build a 26-0 halftime lead, recovering a fumble on a punt return at Chicago's 13-yard line.
"Everything about (Sunday) was really good. Exciting way to start the season. Unique way to start the season based on the set of circumstances,Cheap Jerseys Free Shipping," the coach added. "But at the same time, that was just one game. We all have a tendency to be way over the top for the good or the bad, and reality is somewhere in the middle."
"It was crazy during the second quarter," tight end Cameron Brate said. "We got a takeaway,Wholesale NFL Jerseys, we scored the first play and then the defense got a pick-six.
"Defense wins championships," Winston said, reflecting on a 29-7 victory in which the Bears turned the ball over four times in the first half and were held to 20 yards rushing.
"If you look at last year, our defense, towards the end of the year they were lights out," the third-year pro said. "That's why our offense had success."
"When you play the perfect game, you can stop worrying about what you have to work on. But I haven't seen it yet," Koetter said.
The Bucs haven't made the playoffs since 2007, and the coach said it's important to not lose perspective.
Three-time Pro Bowl safety T.J. Ward joined the Bucs this month after being released by Denver following the final preseason.
"So,NBA Jerseys China, we had run one play in the second quarter and we were already up 23-0," Brate said. "It was a little weird because we really didn't have to do too much to build that lead."