Going into training camp, new head coach Chip Kelly announced that Foles would compete with Vick and newly drafted rookie Matt Barkley for the Eagles starting quarterback job in the 2013 season.
Going into preseason, it became clear that the job was a two-way battle between Foles and Vick.
Foles played average during preseason while Vick excelled past him.
On August 20, it was announced that Vick would start the season and Foles would be the backup.

Foles saw his first action during a Week 4 loss against the Denver Broncos.
He completed 3 out of 4 attempted passes for a total of 49 yards and one touchdown, with no interceptions.

On October 6, Foles entered the game against the New York Giants in the second quarter, after Vick suffered a hamstring injury.
Foles completed 16 of 25 passes for 197 yards and 2 touchdowns, leading the Eagles to a 36–21 win over the Giants.
Later in the week, it was announced that Foles would get the start in Week 6 against the 0–4 Tampa Bay Buccaneers, after Vick was declared unable to start due to his injury.
In his Week 6 start on October 13, Foles had one of the best starts of his career, completing 22 of 31 passes for 296 yards and 4 total touchdowns (3 passing, 1 rushing) in a 31–20 win over the Bucs, a performance that earned him NFC Offensive Player of the Week.

On October 15, Vick announced that he needed another week of rehab before he was able to start again, making Foles the starter for the Week 7 matchup against the Dallas Cowboys for the division lead.
However, against the Cowboys, Foles completed only 11 of 29 passes for a total of 80 yards, with no touchdowns.
In that same game, Foles left in the 4th quarter after suffering a head injury, and was replaced by rookie Matt Barkley.
Barkley did not perform well either, throwing 3 interceptions.
The Eagles went on to lose 17–3 to the Cowboys thus dropping to 3–4 on the season and 1 game out of first place.
The next day, Foles was diagnosed with a concussion and ruled out of any participation in the Week 8 matchup against the Giants on medical grounds.

Vick left the game late in the second quarter of the Eagles 15–7 loss to the Giants in Week 8, aggravating the hamstring injury he had previously picked up in Week 5.

Foles was given his third start of the season for Week 9 against the Oakland Raiders.
Against the Raiders, Foles threw for seven touchdowns, tying a record held by six other quarterbacks (held by eight QB's as of 2020).
Foles is one of three quarterbacks to throw seven touchdowns and no interceptions; he also amassed a perfect passer rating (158.3), having thrown more touchdown passes than incompletions.
Foles was awarded his second NFC Offensive Player of the Week Award of the season for his performance against the Raiders.

In Week 10 of the regular season, Foles played in his sixth game of the season (four starts) against the Green Bay Packers.
Coming into the game, the Eagles had lost to the Packers on the last three occasions the teams had met (including post season).
Foles completed 12 out of 18 passes for a total of 228 yards, 3 touchdowns, and no interceptions.
His passer rating was extremely high for the second consecutive week, finishing at 149.3 and becoming the first quarterback in NFL history to post passer ratings above 149 in consecutive weeks.
Foles carried 8 times during the game, including a 16 yard long run, finishing the game with 38 yards total and one fumble lost.
The Eagles won the game 27–13 and moved to 5–5.

Foles continued as the starting quarterback in Week 11 of the regular season against the Washington Redskins at home.
For the sixth time this season, Foles’ passer rating eclipsed 100, as he completed 17 of his 26 attempts for 298 yards with no touchdowns and no interceptions.
Foles rushed the ball on 9 occasions during the game, ending with 47 total yards and a rushing touchdown.
He led the Eagles to a 24–0 lead at the end of the third quarter, before a comeback from the Redskins meant the game finished 24–16.
The win moved the Eagles to an overall record of 6–5–0 and first position in the NFC
Going into training camp, new head coach Chip Kelly announced that Foles would compete with Vick and newly drafted rookie Matt Barkley for the Eagles starting quarterback job in the 2013 season. Going into preseason, it became clear that the job was a two-way battle between Foles and Vick. Foles played average during preseason while Vick excelled past him. On August 20, it was announced that Vick would start the season and Foles would be the backup.
Foles saw his first action during a Week 4 loss against the Denver Broncos. He completed 3 out of 4 attempted passes for a total of 49 yards and one touchdown, with no interceptions.
On October 6, Foles entered the game against the New York Giants in the second quarter, after Vick suffered a hamstring injury. Foles completed 16 of 25 passes for 197 yards and 2 touchdowns, leading the Eagles to a 36–21 win over the Giants. Later in the week, it was announced that Foles would get the start in Week 6 against the 0–4 Tampa Bay Buccaneers, after Vick was declared unable to start due to his injury. In his Week 6 start on October 13, Foles had one of the best starts of his career, completing 22 of 31 passes for 296 yards and 4 total touchdowns (3 passing, 1 rushing) in a 31–20 win over the Bucs, a performance that earned him NFC Offensive Player of the Week.
On October 15, Vick announced that he needed another week of rehab before he was able to start again, making Foles the starter for the Week 7 matchup against the Dallas Cowboys for the division lead. However, against the Cowboys, Foles completed only 11 of 29 passes for a total of 80 yards, with no touchdowns. In that same game, Foles left in the 4th quarter after suffering a head injury, and was replaced by rookie Matt Barkley. Barkley did not perform well either, throwing 3 interceptions. The Eagles went on to lose 17–3 to the Cowboys thus dropping to 3–4 on the season and 1 game out of first place. The next day, Foles was diagnosed with a concussion and ruled out of any participation in the Week 8 matchup against the Giants on medical grounds.
Vick left the game late in the second quarter of the Eagles 15–7 loss to the Giants in Week 8, aggravating the hamstring injury he had previously picked up in Week 5.
Foles was given his third start of the season for Week 9 against the Oakland Raiders. Against the Raiders, Foles threw for seven touchdowns, tying a record held by six other quarterbacks (held by eight QB's as of 2020). Foles is one of three quarterbacks to throw seven touchdowns and no interceptions; he also amassed a perfect passer rating (158.3), having thrown more touchdown passes than incompletions. Foles was awarded his second NFC Offensive Player of the Week Award of the season for his performance against the Raiders.
In Week 10 of the regular season, Foles played in his sixth game of the season (four starts) against the Green Bay Packers. Coming into the game, the Eagles had lost to the Packers on the last three occasions the teams had met (including post season). Foles completed 12 out of 18 passes for a total of 228 yards, 3 touchdowns, and no interceptions. His passer rating was extremely high for the second consecutive week, finishing at 149.3 and becoming the first quarterback in NFL history to post passer ratings above 149 in consecutive weeks. Foles carried 8 times during the game, including a 16 yard long run, finishing the game with 38 yards total and one fumble lost. The Eagles won the game 27–13 and moved to 5–5.
Foles continued as the starting quarterback in Week 11 of the regular season against the Washington Redskins at home. For the sixth time this season, Foles’ passer rating eclipsed 100, as he completed 17 of his 26 attempts for 298 yards with no touchdowns and no interceptions. Foles rushed the ball on 9 occasions during the game, ending with 47 total yards and a rushing touchdown. He led the Eagles to a 24–0 lead at the end of the third quarter, before a comeback from the Redskins meant the game finished 24–16. The win moved the Eagles to an overall record of 6–5–0 and first position in the NFC 
Nick Foles