Matthew j. lee/globe staff

Wes Welker protected the ball as he was chased by Dolphins defenders.

JESSICA RINALDI/reuters

Rob Gronkowski scored in the second half.

Elise Amendola/Associated press

Stevan Ridley ran the ball into the end zone in the second quarter.

matthew j. lee/globe staff

Deion Branch made the signal for a first down after a reception in the second quarter.

elise amendola/associated press

Tom Brady congratulated Stevan Ridley after Ridley’s second rushing touchdown of the game.

elise amendola/associated press

Tom Brady looked for a receiver.

Charles krupa/associated press

Defensive end Justin Francis celebrated a sack of Dolphins quarterback Ryan Tannehill.

Charles Krupa/Associated Press

Patriots fans sat bundled against the cold before the game.