Professional drafts Johnson was selected in the second round of the
1965 NFL draft by the
Cleveland Browns (27th overall) and in the
1965 American Football League (AFL) Redshirt draft by the
Denver Broncos. The NFL draft took place on November 28, 1964, and Johnson signed a contract with the Browns a few days later. This was during a period before the
NFL/AFL merger when the NFL and AFL were competing to sign players drafted out of college. Johnson was still considered a college junior at the time of the draft, and it was reported that persons associated with Los Angeles State and coach Beatty were considering protesting to NFL Commissioner
Pete Rozelle that it was improper to draft an underclassman. In 1966, Johnson replaced Modzelewski at left tackle. Johnson started all 14 games, with 5.5
quarterback sacks and one fumble recovery in his first full season. He was the Browns' fastest lineman, running the 40-yard dash in five seconds. Modzelewski later became Johnson's
defensive line coach (1968 to 1975) and
defensive coordinator (1976) with the Browns, and in 1970 said Johnson was "the best defensive tackle Cleveland ever had". From 1967 to 1976, Johnson started all 14 games each season as the Browns' left defensive tackle, except in 1975 when he started 13 of 14 games. During his 13-year career with the Browns he played in 168 consecutive games; a team record at the time (1976). Johnson was selected to the Pro Bowl again in 1968, with 5.5 sacks and three fumble recoveries. The
Newspaper Enterprise Association (NEA) named him second-team
All-Pro. The Browns were again first in the Century Division and defeated the
Dallas Cowboys in the first (divisional) round of the
1968 NFL playoffs, 31–20. At the end of his career, Johnson said he considered this his favorite game over his entire career. In 1969, Johnson was selected to the Pro Bowl for a third consecutive year. He had eight sacks and two fumble recoveries that season. He returned a
Billy Kilmer fumble 12 yards for a touchdown in an October 12 game against the
New Orleans Saints. The Browns were 10–3–1, and were first in the Century Division again. They defeated the Cowboys in the divisional round of the
1969 NFL playoffs, 38–14. On January 4, 1970, the Browns played the
Minnesota Vikings in
Bloomington, Minnesota for the
1969 NFL championship, losing 27–7. The temperature that day, with the
wind chill factor, reached –20 degrees
Fahrenheit (–28.9 C). Johnson's right hand, which he planted in the ground in lining up on defense, suffered
frostbite that day. He was hospitalized for a number of days at the Shaker Medical Center in Cleveland and nearly had to have one or more of his fingers amputated. Johnson had received a pain killing injection in his hand before the game to let him play more easily with a hand injury; and this may have made him unable to experience the full effects the extreme cold was having on his hand during the game. After the game he was in excruciating pain and groaned in pain on the flight back to Cleveland, where he was hospitalized. In 1970, Johnson had 6.5 sacks, a safety and an interception. In 1971, he had 5.5 sacks, and two fumble recoveries. He scored the second touchdown of his career on a fumble recovery in a December game against the Saints; after Browns' defensive end
Joe Jones forced a fumble against Saints' quarterback
Archie Manning and Johnson recovered it for a touchdown. Both of Johnson's career touchdowns were scored in
New Orleans. In 1971, Johnson tied his career high with eight sacks, and had the second interception of his career. He received one vote for the AP's NFL Defensive Player of the Year, with only eight players receiving more votes. From 1972 to 1976 with the Browns, he had a total of 16.5 sacks and two fumble recoveries. In 12 years with the Browns, he played in 168 consecutive games, with 66 quarterback sacks, two interceptions, one safety, and 11 fumble recoveries, two of which he returned for touchdowns.
Cincinnati Bengals After being released by the Browns, Johnson was picked up by the
Philadelphia Eagles. The Eagles released him before the 1977 season started because Johnson did not fit their
3–4 defensive scheme. After being released, Johnson called
Cincinnati Bengals' defensive coordinator
Howard Brinker, who had coached with the Browns, to express his interest in playing with his hometown Bengals. The Bengals signed Johnson in early September 1977, and he played his final season with the Bengals. Johnson played in all 14 games, starting two games at defensive tackle, with two quarterback sacks. This was his last NFL season. The Bengals released Johnson in early 1978. Johnson stated it still was his intention to continue playing in the NFL. He had the opportunity for a tryout with the
Washington Redskins in 1978, but could not move forward with that because of a back injury. == Legacy and honors ==