A Dallas Cowboys season that has been bad has gotten worse.

Andy Dalton, starting his second game for an injured Dak Prescott, was forced to the locker room in the third quarter against the Washington Football Team after taking a big hit from linebacker Jon Bostic on a third-down scramble.

Dalton went straight to the locker room for further examination and was later ruled out for the game; Bostic was ejected from the game.

Dalton was replaced by rookie Ben DiNucci, a seventh-round pick, who saw one series of action in last week's loss to the Arizona Cardinals.

Before the injury, Dalton completed 9 of 19 passes for 75 yards. He was sacked three times and lost a fumble on the Cowboys' first possession that led to a safety. He had one pass intercepted on a throw that was behind Ezekiel Elliott and tipped into Cole Holcomb's hands for the turnover.

The Cowboys' third quarterback, Garrett Gilbert, who joined the team last week, is inactive. Tight end Blake Bell was a quarterback at Oklahoma, so he could be the team's backup.

The last time the Cowboys had to use three quarterbacks in a season because of injury came in 2015. Tony Romo started and finished just two games as he suffered a twice-broken right collarbone. The Cowboys also had Brandon Weeden, Matt Cassel and Kellen Moore, their current offensive coordinator, start games in that 4-12 season.