Green Bay Packers QB Aaron Rodgers leads fans in singing ‘Happy Birthday’ to David Bakhtiari

A quarterback’s best friend on the field is likely the left tackle protecting him. For Aaron Rodgers, that BFF is David Bakhtiari, the two-time All-Pro offensive lineman for the Green Bay Packers.

Friday is Bakhtiari’s 31st birthday.

A group of Packers fans touring Lambeau Field on Friday got a surprise and a chance to celebrate Bakhtiari’s big…