AFC East

Dolphins clinch playoff spot on last-second field goal against against Cowboys

The Miami Dolphins have been called pretenders for most of this season. On Sunday, they might have quieted some of those critics. Jason Sanders’ fifth field goal of the game — from 29 yards out as time expired — lifted the Dolphins to a 22-20 victory over the visiting Dallas Cowboys at Hard Rock Stadium and secured a playoff berth. It was the Dolphins’ first victory this season over a team that currently has a winning record. The Dolphins (11-4) are headed to the postseason in back-to-back seasons for the first time since they made it five consecutive seasons from 1997-2001. And the win kept M…