Obert Logan Obert Clark " Butch " Logan ( December 6 , 1941 – January 21 , 2003 ) was an American football Safety in the National Football League for the Dallas Cowboys and the New Orleans Saints . He played college football for Trinity University . Logan , whose nickname was " The Little O " , was the last person in the NFL to wear the single digit 0 before its use was discontinued by the league . Early years . Originally recruited to Trinity University as a defensive back , he was the best athlete on the team , so his coaches persuaded him to play both ways . Logan Lettered four years at Trinity , playing defensive back , flanker and halfback . He received Little All - America honorable mention honors as a senior , was a three - time member of the All - Texas team and a three - time All - Southland Conference selection . Logan was inducted into the Trinity University Hall of Fame . Professional career . Dallas Cowboys ( first stint ) . Logan was signed as an undrafted free agent by the Dallas Cowboys after the 1965 NFL Draft . The team tried him first at flanker , before moving him to safety , where he would end up surprising observers by making the Cowboys opening day roster for the 1965 season . During his first year , he was a reserve safety ( playing behind Mel Renfro ) . He also was a key component of the special teams unit which blocked nine field goals ( three times as many as other team in the NFL and Logan blocked two of those ) , 5 extra points and 1 punt , totalling 15 kicks blocked . Early in his first season with the Cowboys , he forced a kickoff fumble that resulted in a touchdown . In the final minute of the Dallas - Philadelphia game , Logan picked off a Norm Snead pass to secure the win . Against the San Francisco 49ers , Larry Stephens blocked a field goal that Logan returned to the Cowboys 47 yard line , helping the Cowboys set up a last minute touchdown to end a 5 game losing streak . In the last game of the season against the New York Giants , he returned a blocked field goal by Cornell Green 60 yards for a key touchdown , helping his team win the game , achieving the first non - losing season in franchise history and advancing to the 1966 NFL Championship Game . He also played in the 1967 NFL Championship Game ( commonly known as the Ice Bowl ) . Logan was small for an NFL player , being and while listed at 182 pounds , appeared to weigh closer to 160 . He also possessed good but not overwhelming speed . What set him apart was tremendous courage and a full out style of play that gave evidence of his knowledge and love for the game . New Orleans Saints . Logan was selected by the New Orleans Saints in the 1967 NFL Expansion Draft , becoming the franchise ' s first starting free safety . The next year , he was one of the last cuts before the start of the 1968 season . Dallas Cowboys ( second stint ) . He was released before the start of the 1969 NFL season , he was trying out as a flanker . Personal life . Logan was well liked and respected by his teammates and his courage and attitude toward the game greatly influenced their lives beyond football . After the NFL , Logan spent 2 years coaching the San Antonio Toros of the Continental Football League . He then coached for one year the Fort Worth Braves which was serving as a farm club for the Kansas City Chiefs . He was trying his hand in the rodeo business as a rancher , when he accepted the Athletic Director and his last coaching job for the St . Paul Cardinals of Shiner , Texas . He contracted colon cancer and died in Luling , Texas at his home on January 21 , 2003 at the age of 61 Logan would often tell friends that the most memorable thing about playing football for the Cowboys was Coach Tom Landry . Logan remembered that the first thing Landry told the rookies at training camp was that his priorities were " God , family and the Dallas Cowboys " . Logan recalled being surprised that football was not Landry ' s first priority . At his funeral many of his Cowboy ' s teammates served as his pall bearers , among them were Lee Roy Jordan , Walt Garrison , Bob Lilly , Don Meredith , and Tex Schramm . Logan had maintained life long friendships with all of these men . After Logan ' s death Cowboy great Lee Roy Jordan said of him , " Obert was just a nice guy . I loved being around him . He was undersized and under - everything else but he proved right away that he was a great competitor . He represented the Dallas Cowboys well . " Logan was survived by his mother Fannie Mae Logan , wife Patricia , and brother James .