Question: How many seasons was Tinker Owens' brother a running back in?

Context paragraphs:
List of pre-NHL seasons: Prior to the first season of the National Hockey League (NHL), which commenced on December 19, 1917, there had been many seasons of ice hockey played by various amateur and professional leagues, often held contemporaneously, going back to the 1880s, to which the NHL can trace its roots.  Below is a list of pre-NHL seasons by ice hockey leagues that are precursors of the National Hockey League.

Billy Taylor (running back, born 1956): Billy Taylor (born July 6, 1956) is a former professional American football player who was selected by the New York Giants in the fourth round of the 1978 NFL Draft.  A 6'0", 215-lb.  running back from Texas Tech, Taylor played for five NFL seasons as a running back and kick returner.  He spent his first three seasons as a member of the Giants, and spent his final two split between the Giants, the New York Jets, and the Los Angeles Raiders.  As the starting running back for the Giants, he led the team in rushing in 1979 and 1980.  His best season was in 1979, when he started all 16 games, carrying the ball 198 times for 700 yards and catching it another 28 times for 253 yards with 11 total touchdowns.  The Jets picked him up after the Giants waived him in 1981, but they cut him three weeks later when they needed to add a defensive lineman to replace the injured Marty Lyons.  Taylor then played two seasons for the Washington Federals of the USFL, amassing 171 rushes for 757 yards and 5 touchdowns along with 64 receptions for 523 yards and 2 TDs in 1983.  In 1984, Taylor rushed 142 times for 499 yards while also collecting 51 receptions for 387 yards and a touchdown.

Steve Owens (American football): Loren Everett "Steve" Owens (born December 9, 1947) is a former football player, a running back in the National Football League (NFL) for five seasons in the early 1970s.

Running back: A running back (RB) is an American and Canadian football position, a member of the offensive backfield.  The primary roles of a running back are to receive handoffs from the quarterback for a rushing play, to catch passes from out of the backfield, and to block.  There are usually one or two running backs on the field for a given play, depending on the offensive formation.  A running back may be a halfback (in certain contexts also referred to as a tailback) or a fullback.  A running back will sometimes be called a "feature back" if he is the team's starting running back.

Louis Carter: Louis Edward Carter (born February 6, 1953 in Laurel, Maryland) is a former running back in the National Football League.  He played for the Oakland Raiders and the Tampa Bay Buccaneers.  Was a 3rd round pick of the Raiders in 1975 having been the MVP of the Coaches' All-American college all-star game in his senior year at Maryland.  Came to the Bucs in the veteran allocation draft of 1976 and became a valuable member of the Buc offense during its first three seasons as a running back and occasional receiver out of the backfield.  Also threw the first TD pass in franchise history when he was stopped at the line of scrimmage in a game against the Seahawks and then lobbed the ball across the line to receiver Morris Owens for an unlikely one-yard score.  Carried the ball 11 times for 27 yards in his rookie season in Oakland and also had two receptions for 29 yards.  Never played again in the NFL after leaving Tampa Bay.

2,000-yard club: The 2,000-yard club is a group of seven National Football League (NFL) running backs that have rushed for 2,000 or more yards in a season.  These seven rushing seasons rank as the highest single-season rushing totals in NFL history, and reaching the 2,000-yard mark is considered a significant achievement for running backs.  No running back has yet achieved this feat twice.  The first 2,000-yard season was recorded in 1973 by Buffalo Bills running back O.J. Simpson.  He is the only player to have surpassed 2,000 yards in a 14-game season, as all others occurred in 16-game seasons; he finished the season with 2,003 rushing yards, averaging six yards per carry and an NFL-record 143.1 rushing yards per game.  Los Angeles Rams running back Eric Dickerson, who had broken the single-season rookie rushing record in 1983, recorded the second 2,000-yard season in 1984.  Dickerson rushed for 2,105 yards, the current NFL rushing record, and averaged 131.6 rushing yards per game.

Trent Richardson: Trenton Jamond Richardson (born July 10, 1990) is an American professional Canadian football running back for the Saskatchewan Roughriders of the Canadian Football League (CFL).  He played college football for the University of Alabama, was recognized as an All-American, and was a member of two BCS National Championship teams.  Considered the top running back prospect for the 2012 NFL Draft, Richardson was considered by some as the best running back prospect since Adrian Peterson, and was selected third overall by the Cleveland Browns.  After being traded away from the Browns after just two seasons with the team, and out of the NFL in just five, he is often considered one of the biggest draft busts in league history.

Derrick Lassic: Derrick Owens Lassic (born January 26, 1970) is a former American football running back in the National Football League for the Dallas Cowboys and the Carolina Panthers.  He played college football for the University of Alabama.  He is most remembered for being the starting running back for the Cowboys for the first two games (both losses) of the 1993 season while Emmitt Smith held out in a contract dispute.

Tinker Owens: Charles Wayne "Tinker" Owens is a former professional American football player who played wide receiver for four seasons for the New Orleans Saints (1976, 1978–1980) in the National Football League.  The younger brother of Heisman Trophy winner Steve Owens, Tinker was a two-time All-American (1974, 1975) during his college career at Oklahoma.

Wheel (route): A wheel route is a pattern run by a receiver or running back in American football.  If a receiver runs it, they will immediately run a quick out pattern, then proceed to turn upfield in a curved pattern.  Typically this route is run by an inside receiver, with the number one receiver heading inside to exploit coverage in the defense.  When run from the running back position the player will run towards the sideline while looking back at the quarterback as if about to receive a pass on a flare route.  The running back will then turn upfield at the sideline and run straight down the field.

Supporting paragraphs: Tinker Owens Steve Owens (American football)
Answer: five