The decision to go for a touchdown on fourth down instead of kicking a go-ahead field goal "gave us the best chance to win", Baltimore Ravens head coach John Harbaugh insisted after the 23-20 defeat to the Buffalo Bills.

With the scores tied at 20-20 in the fourth quarter, the Ravens put together a 14-play, 93-yard drive from their own five-yard line to give themselves the opportunity to gain a precious late lead.

However, the drive stalled at the crucial moment and the Ravens faced a fourth-and-goal from the Bills' two-yard line with just over four minutes left in the game.

While a short field goal would have given the Ravens the lead, Harbaugh opted to go for the touchdown. The decision did not pay off as quarterback Lamar Jackson threw an interception, before Bills quarterback Josh Allen led a 77-yard drive to set up Tyler Bass for the game-winning field goal as time expired.

After the match, Harbaugh defended his late-game strategy, telling reporters: "[If] you kick a field goal there, now it's not a three-down game anymore, it's a four-down game.

"You're putting them out there, you're putting your defense at a disadvantage because they've got four downs to convert all the way down the field and a chance to again score seven, and then you lose the game on a touchdown.

"It didn't turn out that way, unfortunately, and we lost the game. So, hindsight, you could take the points, but if you look at it analytically, understand why we did it."

The decision sparked a furious touchline altercation between Harbaugh and cornerback Marcus Peters, with the former Kansas City Chief having to be pulled away from his coach.

But Harbaugh was not fazed by the interaction after the game, adding: "Emotions run high.

"We're on the same page, he and I. We have a great relationship, we have an honest relationship. I love him, I hope he still loves me. We'll see. I'm a Marcus Peters guy."