The NFL teams that shouldn't be as good as they are

Among the teams with the NFL's best records are the Tampa Bay Buccaneers and San Francisco 49ers, which have defied expectations to be 4-1.

A little more than three minutes remained in their Week 5 game Sunday when the Seattle Seahawks made a critical error: They scored a touchdown, taking a late lead over Tampa Bay.

Last season such a predicament would most likely have doomed the Buccaneers, who were 3-5 in games decided by one score or less and won just two games after trailing in the fourth quarter.

Yet this season, the Buccaneers have transformed into one of the most clutch teams in NFL history. Over the final three minutes Sunday, quarterback Baker Mayfield threw a touchdown pass to take back the lead, and the Buccaneers defense intercepted a tipped pass, which set up Tampa Bay's game-winning field goal as time expired.

The win improved the Buccaneers to 4-1 — with all four wins coming via scores in the final minute of regulation, an NFL record. No other team in NFL history has started 4-1 while winning each game by three points or fewer.

"You don’t ever want to play games that close, but early in the year all these games are going to be tough, they’re going to be one-score games," coach Todd Bowles told reporters Monday. "Last year we didn’t pull them out. This year, we’ve been finding a way to win."