Super Bowl-winning quarterback Craig Morton died Saturday. He was 83 years old. Morton played 18 seasons in the NFL, spanning from 1965-82, which included parts of three seasons with the Giants — though he’s most remembered for his time with the Cowboys and Broncos.  “We are saddened to hear of Craig’s passing. He was a great leader and teammate. Our thoughts are with his family and friends,” the Giants said in a statement.  Quarterback Craig Morton of the New York Giants drops back to pass against the San Diego Chargers during an NFL football game at Shea Stadium, October 25, 1975. Getty Images Morton started his career with the Cowboys, who selected him fifth overall in the 1965 NFL Draft out of Cal, and spent his early career backing up Don Meredith before moving into the starter role in 1969.  -Dallas Cowboys Craig Morton is pictured in 1973 AP He would start splitting time with Cowboys legend Roger Staubach in 1971.…