The limp was gone as the 38-year-old engineered a fourth-quarter comeback that kept Pittsburgh as the NFL's only unbeaten team. Those are the four games Dallas has been without star Dak Prescott, out for the season with a broken ankle. Roethlisberger's first touchdown came after he injured his left knee after a throw on a hit from defensive tackle Neville Gallimore. “Someone hit me right on the side of the knee, kind of bent my knee a little bit,” Roethlisberger said. “Just had some discomfort.”Gilbert's first touchdown pass was a 20-yarder to Lamb for a 10-0 lead in the second quarter.

Dallas Cowboys quarterback Andy Dalton (14) is hit by Washington Football Team inside linebacker Jon Bostic (53) in the second half of an NFL football game, Sunday, Oct. 25, 2020, in Landover, Md. Dalton left the field after this hit and Bostic was ejected from the game. (AP Photo/Patrick Semansky)

Dalton left the field after this hit and Bostic was ejected from the game. (AP Photo/Patrick Semansky)FRISCO, Texas – The Dallas Cowboys declared quarterback Andy Dalton out Saturday for their game in Philadelphia because of a concussion, clearing the way for rookie Ben DiNucci's first start. Prescott was the last rookie to start at quarterback for Dallas four years ago. The Cowboys activated linebacker Sean Lee from injured reserve, setting up the veteran for his season debut. The 11th-year player has been out since the start of training camp because of a core muscle injury that required surgery.

Cleveland Browns quarterback Baker Mayfield (6) celebrates on the field after their 49-38 win against the Dallas Cowboys in an NFL football game in Arlington, Texas, Sunday, Oct. 4, 2020. Mayfield threw for two touchdowns, including one set up when Garrett had a strip sack in a third straight game, and Beckham scored three times and the Cleveland Browns held on to beat the Dallas Cowboys 49-38 on Sunday. Dallas is the first team since Oakland in 2012 to allow at least 38 points in three straight games in the same season. Cowboys: C Joe Looney injured his right knee on the first offensive play of the game and didn't return. Cowboys: New York Giants in second of three straight home games next Sunday.