He began his career with the Pittsburgh Steelers, and he was part of two Super Bowl championship teams in 1974 and 1975.
[1] In April 1978, the Steelers traded Clack (along with wide receiver Ernie Pough) to the New York Giants in exchange for offensive lineman John Hicks.
Pisarcik fumbled the ball attempting to hand-off to Fullback Larry Csonka.
Hitting the hip of Csonka the ball bounced in to the hands of Herman Edwards who returned the fumble for a touchdown at the end of the November 19, 1978 game between the Giants and the Philadelphia Eagles at Giants Stadium, costing the team a certain victory in a play since known as "The Miracle at the Meadowlands" to Eagles' fans and "The Fumble" to Giants' fans.
The last second win propelled the Eagles into the playoffs and prompted the NFL to adopt the "kneel down" play, otherwise known as the "victory formation" to end games.