I pretty sure its Jim Kelly
Through Super Bowl XLIII, that is Phil Simms of the New York Giants who completed 88% of his passes (22 of 25) in Super Bowl XXI, a 39-20 Giants win over the Denver Broncos.
Phil Simms of the New York Giants in Super Bowl XXI (22 completions in 25 pass attempts).
Bills
Super Bowl XXIThe New York Giants beat the Denver Broncos 39-20 in Super Bowl XXI played on January 25, 1987.
Season 1986, Super Bowl XXI on January 25, 1987
The Denver Broncos lost Super Bowl XXI to the New York Giants 39-20, on January 25, 1987.
Super Bowl XXVThe New York Giants beat the Buffalo Bills 20-19in Super Bowl XXV played on Jamuary 27, 1991.
Super Bowl XXI, played January 25, 1987, was between the New York Giants and the Denver Broncos. The Giants won 39-20.
On January 25, 1987, the Denver Broncos were defeated by the New York Giants, 39-20, in Super Bowl XXI at the Rose Bowl in Pasadena, California.
The giants have won four Super Bowls. Super Bowl 21 against the broncos 39-20 Super bowl 25 against the bills 20-19 Super Bowl 42 against the pats 17-14 Super Bowl 46 against the pats 21-17
The New York Giants won their first Super Bowl against the Denver Broncos on January 25, 1987.
Buffalo Bills Defensive Lineman Bruce Smith sacked New York Giants quarterback Jeff Hostetler in the endzone for a safety on Jan 27, 1991 during Superbowl 25.