Question: Which retired American football player played defense for the 1983 Dallas Cowboys, and briefly left football in 1979 to pursue a career in boxing?

full_context: Document 1: 1984 Washington Redskins season: The 1984 Washington Redskins began with the team trying to improve on their 14–2 record from 1983. Art Monk set an NFL record (since broken) for most receptions in a season. The Redskins started the season losing their first two games, but would recover to win their next five games. A mid season slump had them on the playoff bubble at 7-5. However, the Redskins would finish the season in strong fashion winning their final four games to win the NFC East with an 11-5 record. The Redskins quest for a third straight NFC Championship ended quickly as the Skins were stunned by the Chicago Bears 23-19 at RFK Stadium.
Document 2: 1983 Dallas Cowboys season: The Dallas Cowboys completed the 1983 season with a record of 12 wins and four losses, finishing second in the NFC East. The team started the season with seven straight victories, including a memorable Monday night win over the Washington Redskins in which the team erased a 20-point halftime deficit and prevailed, 31–30. The Cowboys were particularly strong on offense, led by quarterback Danny White and running back Tony Dorsett. The Cowboys scored a team record 479 points and staged a few come-from-behind victories during the season. However, the defense gave up many points, despite strong play from Randy White, Ed "Too Tall" Jones, and Everson Walls. In particular, the young secondary was guilty of giving up many big plays throughout the season.
Document 3: Thomas Jones (American football): Thomas Quinn Jones (born August 19, 1978) is an American actor and former American football running back who played twelve seasons in the National Football League (NFL). He played college football for the University of Virginia. He was drafted by the Arizona Cardinals seventh overall in the 2000 NFL Draft, and played for the Tampa Bay Buccaneers in addition to the New York Jets, Chicago Bears and Kansas City Chiefs. He is among the top 25 leading rushers in NFL history, and a member of the 10,000 yards club.
Document 4: Hugh McElhenny: Hugh Edward McElhenny Jr. (born December 31, 1928) is a former professional American football player who was a halfback in the National Football League (NFL) from 1952 to 1964 for the San Francisco 49ers, Minnesota Vikings, New York Giants, and Detroit Lions. He was noted for his explosive, elusive running style and was frequently called "The King". A member of San Francisco's famed "Million Dollar Backfield" and one of the franchise's most popular players, McElhenny's number 39 jersey is retired by the 49ers and he is a member of the San Francisco 49ers Hall of Fame.
Document 5: Roy Jones Jr.: Roy Levesta Jones Jr. (born January 16, 1969) is an American professional boxer, boxing commentator, boxing trainer, rapper, and actor who holds dual American and Russian citizenship. He is a six-time former world champion in four weight classes, having held titles at middleweight, super middleweight, light heavyweight, and heavyweight; and is the only boxer in history to start his professional career at light middleweight and go on to win a heavyweight title. As an amateur he represented the United States at the 1988 Summer Olympics, winning a silver medal in the light middleweight division.
Document 6: 1980 Houston Oilers season: The 1980 season was the Houston Oilers' 21st season and their 11th in the National Football League (NFL). The team scored 295 points while the defense gave up 251 points. Their record of 11 wins and 5 losses resulted in a second-place finish in the AFC Central Division. The Oilers appeared twice on Monday Night Football. In their first appearance on Monday Night Football, the Oilers beat the Cleveland Browns 16–7. In their second appearance, the Oilers defeated the New England Patriots 38–34. Earl Campbell led the NFL in rushing for the third consecutive year and had four 200 yard rushing games.
Document 7: Walter Jones (American football): Walter Jones Jr. (born January 19, 1974) is a former American football offensive tackle who played in the National Football League (NFL) for thirteen seasons. Born in Alabama, he played college football for Florida State University. Jones played his entire professional career with the Seattle Seahawks, where he was a seven-time All-Pro selection and eventual NFL 2000s All-Decade Team honoree. Starting in each of his 180 games in Seattle, the Seahawks attempted more than 5,500 passes with Jones on the field, while Jones gave up a total of only 23 quarterback sacks, and was penalized for holding just nine times. On February 1, 2014, Jones was selected to the Pro Football Hall of Fame in his first year of eligibility.
Document 8: 1983 Oklahoma State Cowboys football team: The 1983 Oklahoma State Cowboys football team represented Oklahoma State University in the 1983 NCAA Division I-A football season. This was the 83rd year of football at OSU and the fifth under Jimmy Johnson. The Cowboys played their home games at Lewis Field in Stillwater, Oklahoma. They finished the season 8–4, and 3–4 in the Big Eight Conference. The Cowboys were invited to the Astro-Bluebonnet Bowl, where they defeated the Baylor, 24–14.
Document 9: Mark Tuinei: Mark Pulemau Tuinei (March 31, 1960 – May 6, 1999) was an American football offensive tackle in the National Football League for the Dallas Cowboys. Known as a "gentle giant", his career lasted for 15 years (1983–1997) and his ability to protect quarterback Troy Aikman and to run-block for running back Emmitt Smith helped them win Super Bowls in 1992, 1993, and 1995 and the NFC East Division in 1985 and 1992-96. He was also selected for the Pro Bowl in 1994 and 1995.
Document 10: 1981 Tampa Bay Buccaneers season: The 1981 Tampa Bay Buccaneers season began with the team trying to improve on an 5–10–1 season. The team was considered to be superior to the 1979 team that finished the season one game shy of the Super Bowl. With the running game and special teams ineffective, the Buccaneers depended heavily on the pass, and particularly on the big play. Jimmie Giles returned to form, establishing numerous team receiving records. Doug Williams became (with Jim Zorn) the second active quarterback to need only four seasons to reach the 10,000 career passing yards mark. The defense improved over the previous season, a change that McKay attributed to less reliance on blitzes, and a general improvement in speed due to changes in the secondary and the drafting of Hugh Green. Their defense allowed the fewest touchdowns of any NFL team, and was described by opponents as "outstanding" and "almost awesome". The team was dogged by inconsistent play throughout the season. Players and coaches believed the Buccaneers to be a playoff-worthy team, but a tendency to self-destruct kept them on the edge of the playoff race, thanks in part to a failure of any other team to take control in either the NFC Central division or the NFC wild-card chase. "We make more mistakes at crucial times than any team I've ever been associated with", said ex-Buckeyes, -Raiders, and -Dolphins safety Neal Colzie. Opposing coach Dick Vermeil said, "I'm not sure they know how good they are", after his Philadelphia Eagles team beat the Buccaneers despite having been outplayed. Nevertheless, the team developed a maturity through the season which allowed them to remain competitive instead of collapsing when behind or when being outplayed.
Document 11: Ed &quot;Too Tall&quot; Jones: Ed Lee "Too Tall" Jones (born February 23, 1951) is a retired American football player who played 15 seasons (1974–1978, 1980–1989) in the National Football League (NFL) for the Dallas Cowboys. In 1979, he briefly left football to attempt a career in professional boxing.
Document 12: Arrington Jones: Arrington Jones III (born February 16, 1959) is a former American football running back who played one season with the San Francisco 49ers of the National Football League (NFL). He was drafted by the San Francisco 49ers in the fifth round of the 1981 NFL Draft. He played college football at Winston-Salem State University and attended John Marshall High School in Richmond, Virginia. Jones was also a member of the Washington Federals of the United States Football League (USFL). He was a member of the San Francisco 49ers team that won Super Bowl XVI and has been a coach on several collegiate teams.
Document 13: 1983 Miami Dolphins season: The 1983 season was the 18th season in football for the Miami Dolphins and they sought to return to the Super Bowl after losing to the Washington Redskins in Super Bowl XVII. It was also a turning point in the team's history, as in the 1983 NFL Draft a young quarterback slipped to deep in the opening round, being passed over by such teams as division rivals New York who drafted Ken O'Brien and New England who drafted Tony Eason. With the 27th pick, the Dolphins decided to take a chance on Dan Marino. In the draft's eighth round the Dolphins also selected receiver Mark Clayton.
Document 14: 1979 Washington Redskins season: The 1979 season of the Washington Redskins in American professional football began with the team trying to improve on their 8–8 record from 1978. While the Redskins were able to improve their record; finishing 10–6, the Redskins were eliminated from playoff contention on the final week of the season when, facing the Dallas Cowboys with the NFC East title on the line, Cowboys quarterback Roger Staubach led a last-minute comeback to defeat Washington 35–34 to win the division; which combined with the Chicago Bears defeating the St. Louis Cardinals 42–6, resulted in the Redskins losing a points tiebreaker for the final wild-card slot.
Document 15: 1978 Atlanta Falcons season: The 1978 Atlanta Falcons season was the Falcons' 13th season. It was the first postseason appearance in franchise history with a 9–7 record. Hosting the Philadelphia Eagles in their first ever playoff game, the Falcons scored 2 TDs in their final 14 minutes to pull out a 14–13 win. A week later the Falcons were 14-point underdogs facing the Cowboys. The Falcons took a 20-13 lead into halftime, but the Cowboys battled back to take a 27-20 lead. With one last shot the Falcons fell inches short of a first down on the Cowboys' 32-yard line, as the Cowboys got the ball and ran down the clock.
ground_truth: Ed "Too Tall" Jones