Baltimore Ravens quarterback Joe Flacco gets sacked by Denver Broncos linebacker DeMarcus Ware, right, as tackle Ricky Wagner, left, fails to make the block during the first half of an NFL football game Sunday, Sept. 13, 2015, in Denver. (AP Photo/Jack Dempsey)

Baltimore Ravens quarterback Joe Flacco gets sacked by Denver Broncos linebacker DeMarcus Ware, right, as tackle Ricky Wagner, left, fails to make the block during the first half of an NFL football game Sunday, Sept. 13, 2015, in Denver. (AP Photo/Jack Dempsey)

Joe Flacco was picked off twice as the Baltimore Ravens lost their first game of the season, a 19-13 loss to the Broncos in Denver, Colo.

It was a complete defensive brawl between Denver and Baltimore that lasted from start to finish. Neither team gave up an offensive touchdown. Both teams’ defensive units, however, scored the only two touchdowns of the game.

Baltimore took a 13-9 lead after cornerback Jimmy Smith picked off Broncos quarterback Peyton Manning and ran the intercepted ball back for a 27-yard touchdown. Smith made the interception by jumping a route, tipping the ball to himself and running up the sidelines untouched.

But Denver responded with its own pick-six as cornerback Aqib Talib intercepted a throw from Flacco and ran it back 51 yards, dashing through potential tacklers for the score. The touchdown gave Denver a 16-13 lead and the Broncos only needed a field goal to build just enough cushion at 19-13 to hold Baltimore off for the win.

Baltimore Ravens running back Justin Forsett runs against the Denver Broncos during the second half of an NFL football game Sunday, Sept. 13, 2015, in Denver. (AP Photo/Joe Mahoney)

Flacco and the Ravens’ offense had one last chance at the end to score a touchdown and win the game. Flacco tossed a perfect pass to veteran receiver Steve Smith in the end zone that would’ve been the game-winning touchdown. But Smith flat out dropped it.

Flacco then took another shot at the end zone, aiming for Crockett Gilmore. The tight end had the ball in his hands for a second, but it was ripped out and tipped into the hands of Broncos safety Darian Stewart for the game-ending interception.

Baltimore Ravens outside linebacker Terrell Suggs is treated on the field during the second half of an NFL football game against the Denver Broncos Sunday, Sept. 13, 2015, in Denver. (AP Photo/Jack Dempsey)

Flacco finished 18 for 32 for 117 yards and two interceptions. Manning’s numbers weren’t much better—he completed 24 of 40 for 175 yards and an interception.

Running back Justin Forsett ran for just 43 yards on 14 carries for the Ravens; rookie running back Buck Allen added 30 yards on nine carries.

Steve Smith was shut down to just two catches for 13 yards.

Veteran linebacker Terrell Suggs limped off the field in the fourth quarter of the game with a torn Achilles; this injury will require season-ending surgery. Suggs suffered the same injury in 2012.

Next – Baltimore (0-1) will stay on the road and travel to Oakland, Calif., to face the Raiders (0-1) on Sept. 20. Kickoff set for 4:05 p.m. Eastern.