Tony Liscio Anthony Liscio ( born July 2 , 1940 in Pittsburgh , Pennsylvania ) is a former American football offensive tackle in the National Football League from 1963 through 1971 . He played college football at the University of Tulsa . Liscio was present at the infamous Ice Bowl , and often credited with easing tensions between African - American and Caucasian teammates on the Dallas Team . Early years . Liscio attended Westinghouse High School where he was an All - state end in football , the starting center in basketball and practiced the shot put for the track and field team . He was inducted into the Westinghouse High School Wall of Fame . He went on to become a two - way starting tackle for the University of Tulsa . As a senior he was a first - team All - Missouri Valley Conference selection and was invited to play in the College All - Star Game against the NFL . In 2004 , he was inducted into the University of Tulsa Hall of Fame . Professional career . Green Bay Packers . Liscio was selected by the Green Bay Packers in the 3rd round of the 1963 NFL Draft and was tried on the defensive side . He was eventually released the week of the season opener . Dallas Cowboys ( first stint ) . Liscio was claimed off waivers by the Dallas Cowboys who switched him to offense , and named him the starter at left tackle at the end of his rookie season . He would go on to become a stalwart on the Cowboys offensive line for almost a decade and only the second player in franchise history to hold this position after replacing Bob Fry . He lost the 1965 season after suffering complications from an offseason right knee surgery . Liscio was traded to the San Diego Chargers as part of the “ Bambi ” trade in May 1971 , that brought Hall of Famer Lance Alworth to the Cowboys . During his first 8 seasons with the Cowboys , he helped them reach 2 NFC Championship s and 1 Super Bowl , while playing in 89 games , many of them with injuries . San Diego Chargers . He never played a game for the Chargers because of injuries . He had problems with both of his hamstrings and a flare up the back problems that cost him the second half of the 1970 season . He was quickly traded to the Miami Dolphins along with a draft choice in exchange for center Carl Mauck . Miami Dolphins . Liscio never played a game for the Dolphins either , because he proceeded to announce his retirement after the trade became official . Dallas Cowboys ( second stint ) . In mid - November 1971 , the Cowboys needed help at left tackle after multiple injuries at that position had hit the team : Ralph Neely fractured his leg in a motorcycle accident ; Don Talbert broke a bone in his foot , and Forrest Gregg was injured in the last part of his 16 - year Hall of Fame career . Tom Landry called Liscio on Monday November 15 , 1971 and he reported to the team on Wednesday to start at left tackle against the Washington Redskins on Sunday . Liscio went into that Redskins game with his right leg taped from the ankle to the hip and both shoulders hurt . With the Cowboys and Redskins battling for first place in the NFC East , “ Once the game started , I felt nothing , ” he recalled . The Cowboys won , 13 - 0 . Liscio ’ s opponent that day was defensive end Verlon Biggs , who never reached the quarterback . He would not allow a sack in the eight starts on his comeback . And the 1971 Cowboys never lost a game with him at left tackle . Not only did they run the table through Super Bowl VI , but he and Alworth ended up as Super Bowl teammates . In that game , Liscio successfully blocked Bill Stanfill throughout the game , leading Duane Thomas and other running backs to 252 rushing yards . For his efforts , Liscio was named NFL Comeback Player of the Year Award , after which he retired .