Jack Concannon

In 1965, he was the third-string quarterback, appearing in 3 games, while making 12-of-29 completions (41.4%) for 176 yards, one touchdown and 3 interceptions. Because his playing opportunities were limited during the season, head coach Joe Kuharich also tried to incorporate him into the games as a halfback, flanker, and punt returner.

In 1966, he still remained as the third-string quarterback, but led the team to 2 December wins that contributed to the Eagles finishing the season with a 9–5 record and a tie for second place in the Eastern Conference of the NFL. He posted 21-of-51 completions (41.2%) for 262 yards, one touchdown and 4 interceptions. He started in the thirteenth game against the Pittsburgh Steelers, tallying 13-of-25 completions for 131 yards, 15 carries for 129 yards (franchise record for quarterbacks) and one rushing touchdown, during the 27–23 victory. He also started the next week against the Cleveland Browns, posting 7-of-23 completions for 120 yards, one passing touchdown, 4 interceptions, 7 carries for 40 yards, and one rushing touchdown in the 33–21 win.

On April 26, 1967, Concannon was traded to the Chicago Bears along with a 1968 fourth round pick (#106-Alan Bush), in exchange for future hall of fame tight end Mike Ditka. The transaction was intended to fill roster vacancies created by the retirements of Eagles' tight end Pete Retzlaff and Bears' quarterback Rudy Bukich. In three seasons with the Eagles, Concannon recorded 103 passes for 637 yards (43.7%), 4 passing touchdowns, 8 interceptions, 50 carries for 433 yards (8.7-yard avg.), 2 rushing touchdowns and the team was 3-0 in his starts.

In 1967, he was named the starter at quarterback, leading the team to a 7-6-1 record, which would be George Halas' final year as an NFL head coach. Concannon appeared in 13 games (12 starts), recording 92-of-186 completions (49.5%), 1,260 yards, 6 touchdowns and 14 interceptions, while rushing for a career-high 279 yards and 3 touchdowns.

In 1968, he began the season with 7 starts (3-4), before suffering a broken collar bone against the Minnesota Vikings. He was replaced with rookie Virgil Carter, after Larry Rakestraw proved to be innefective as the starter. Concannon collected 71-of-143 completions (49.7%) for 715 yards, 5 passing touchdowns, 9 interceptions, 104 rushing yards and 2 rushing touchdowns. He was injured and missed 7 contests.

In 1969, he lost the starting quarterback role to rookie Bobby Douglass, after the team lost the first four contests, while being outscored 62-125. Concannon appeared in 14 games (5 starts), registering 87-of-160 completions (54.4%) for 783 yards, 4 touchdowns and 8 interceptions.

In 1970, he regained the starting position from Douglass. The Bears decided to return to Douglass in the tenth game against the Buffalo Bills, who responded by throwing 4 touchdowns, but suffered a fractured wrist and was lost for the season. Concannon appeared in 14 games (13 starts), while setting career marks with 385 attempts, 194 completions, 2,130 yards, 16 touchdowns and 18 interceptions.

In 1971, he was limited to just three starts due to a left knee injury he suffered in the second quarter against the Los Angeles Rams. On August 17, 1972, he was traded to the Dallas Cowboys in exchange for offensive tackle Bob Asher, defensive tackle Bill Line and a 1973 second round draft choice (#48-Gary Hrivnak). In five seasons with the Bears, Concannon recorded 486 passes for 5,222 yards (51.1%), 31 passing touchdowns, 52 interceptions, 164 carries for 586 yards (3.6-yard avg.), 8 rushing touchdowns and the team was 17-22-1 in his starts.

In 1972, he was acquired by the Dallas Cowboys, because the team needed a quarterback after starting quarterback Roger Staubach suffered a separated right shoulder in the preseason game against the Los Angeles Rams. He was placed on the taxi squad, but broke his right thumb playing paddle-ball at the Cowboys' practice field, before having the chance of joining the active roster. By the time he recovered from the injury, Staubach had already been activated.

In 1973, he was inducted into the Boston College Varsity Club Hall of Fame.

In 1973, he spent the season on the taxi squad. On July 20, 1974, he was traded to the Green Bay Packers in exchange for a 1975 fifth round pick (#113-Kyle Davis).

In 1974, he was the third-string quarterback behind John Hadl and Jerry Tagge. He appeared in 14 games (2 starts), tallying 28-of-54 completions (51.9%) for 381 yards, one touchdown and 3 interceptions. He was released on September 15, 1975.

On October 29, 1975, he was signed as a free agent by the Detroit Lions, to provide depth after quarterbacks Bill Munson and Greg Landry suffered knee injuries against the Houston Oilers. He was the backup quarterback behind Joe Reed, appearing in 7 games, while making 1-of-2 completions (50%). He wasn't re-signed after the season.

In March 1981, Concannon was arrested on charges that he delivered a kilogram (2.2 lb) of cocaine to an undercover drug agent in Schaumburg, Illinois, a suburb northwest of Chicago. A year later in March 1982, he was acquitted. He successfully argued entrapment after admitting he was in desperate financial straits, but Cook County Criminal Court Judge Earl Strayhorn admonished Concannon:

Concannon died at age 62 in 2005 of a heart attack in Newton, Massachusetts. He is buried at Calvary Cemetery in Waltham.