Dallas rallied to tie Baltimore with 10 seconds left, but another defensive breakdown allowed the Ravens to steal a 34-31 win in Rio.

The Dallas Cowboys didn’t lose in Brazil because the offense couldn’t score.

They lost because the defense couldn’t finish.

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Dallas fell 34-31 to the Baltimore Ravens at Maracanã Stadium in Rio de Janeiro, wasting a late comeback and allowing one final explosive play that summed up an afternoon filled with defensive breakdowns.

The Cowboys had just tied the game at 31 on Brandon Aubrey’s 23-yard field goal with 10 seconds remaining.

At that point, overtime looked inevitable.

It lasted one play.

Lamar Jackson immediately found Zay Flowers for 26 yards, moving Baltimore to the Dallas 39. One second remained, and Tyler Loop drilled a 57-yard field goal to end it.

That was the final collapse, but hardly the only one.

Dallas actually started well defensively, forcing Baltimore into an early three-and-out and building a 10-0 lead. But once the Ravens settled in, the Cowboys struggled to contain both Jackson and Derrick Henry.

Baltimore rushed for 192 yards on 38 carries, with Henry gaining 89 yards and scoring twice. Jackson added 50 rushing yards on six attempts, repeatedly stressing Dallas’ edge discipline.

The passing defense wasn’t much better.

Jackson completed 75 percent of his passes, threw two touchdowns and wasn’t intercepted. Flowers caught five passes for 83 yards, including the catch that effectively ended the game.

Dallas also failed to create a turnover.

That’s a major problem against an offense built around explosive plays.

The Cowboys did fight back offensively. Dak Prescott threw for 276 yards, CeeDee Lamb had 112 receiving yards, and Javonte Williams rushed for 98. Dallas erased an 11-point second-half deficit and actually led 28-24 in the fourth quarter.

Then the defense cracked again.

Baltimore marched for a go-ahead touchdown with 1:34 left, as Jackson hit tight end Mark Hibner for the score.

Dallas answered.

The defense didn’t.

For a unit that talked all week about containing Jackson and playing disciplined football, the ending was brutal.

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Ten seconds.

One completion.

One field goal.

One more loss that the Cowboys defense will have a hard time explaining away.