Fourth-seeded Valley Stream North upended top-seeded Seaford, 21-17 in a Nassau IV semifinal Saturday at Hofstra.

Credit: Kathleen Malone-Van Dyke

North Valley Stream quarterback Anthony Martelli reacts after his team scored an extra point for a 21-17 win over Seaford. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

Valley Stream North's Bill Patsos reacts after his team's 21-17 win over Seaford. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

Valley Stream North's James Capoziello reacts after he scores against Seaford. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

Valley Stream North's James Capoziello is seen on the field after he scored two touchdowns against Seaford. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

Valley Stream North's James Capoziello is hugged by a teammate after he scored the winning touchdown with 37 seconds left in the fourth quarter against Seaford. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

North Valley Stream quarterback Anthony Martelli scrambles and looks for an open receiver with under 2 minutes left in the fourth quarter during a game against Seaford. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

North Valley Stream quarterback Anthony Martelli runs the ball with under two minutes left in the fourth quarter during a game against Seaford. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke Kathleen Malone-Van Dyke

Valley Stream North celebrates after their 21-17 win over Seaford. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

Valley Stream North's Bill Patsos runs the ball against Seaford. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

North Valley Stream quarterback Anthony Martelli throws a pass against Seaford. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

Seaford's Nick Fischetti runs the ball against Valley Stream North. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

Seaford's Kyle Kolodinsky intercepts the ball and runs for a 40-yard gain against Valley Stream North. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

Seaford's Nick Fischetti scores a touchdown in the second quarter against Valley Stream North. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

Seaford's Austin Quiroz is seen on the sideline before the game against Valley Stream North. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

Seaford's Nick Fischetti reacts after he scores a touchdown in the second quarter against Valley Stream North. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

Seaford's Austin Quiroz sacks Valley Stream North's quarterback Anthony Martelli. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

Seaford quarterback Peter Adorno throws a pass against Valley Stream North. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke

Seaford's Austin Quiroz dives for extra yardage against Valley Stream North. (Nov. 17, 2012)

Credit: Kathleen Malone-Van Dyke Kathleen Malone-Van Dyke

Valley Stream North's Bill Patsos runs the ball against Seaford. (Nov. 17, 2012)

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