NFL: Philadelphia's post-season hopes in jeopardy after third straight defeat to Washington

The Philadelphia Eagles' playoff ambitions suffered a huge blow with a surprise 27-24 loss to the Washington Redskins.

A 26-yard field goal from Kai Forbath with five seconds left condemned the Eagles to a third successive defeat and leaves them needing the Dallas Cowboys to lose their last two games to make sure of winning the NFC East.

The crucial moment came after Eagles quarterback Mark Sanchez threw an interception with 91 seconds remaining with Redskins cornerback Bashaud Breeland diving in front of Jeremy Maclin to make the pick.

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The Redskins scored on the resulting possession and although a poor kick-off handed the Eagles one last chance, Sanchez's 'hail Mary' pass into the end zone was knocked down by David Amerson and Washington ended their six-game losing streak.

Quarterback Robert Griffin III returned as the Washington starter and won in his first complete game in more than a year. He went 16 for 23 for 220 yards with one interception.

Mark Sanchez committed two turnovers for the Eagles, including Washington rookie cornerback Bashaud Breeland's interception with 1:31 left that led to the winning field goal. Sanchez was 37 of 50 for 374 yards with two touchdowns to Riley Cooper.

The result also meant the Detroit Lions clinched their first playoff berth since 2011. The Eagles (9-6) will now focus their energies on rooting for the Indianapolis Colts to beat the Cowboys (10-4) on Sunday. 

Watch the Colts take on the Cowboys live on Sky Sports 2 at 9.25pm on Sunday.