By Andrew Holleran NASCAR announced some big broadcasting news on Saturday night. During the Cup Series race in Martinsville on Saturday evening, FOX announced that a legendary figure will return to the broadcasting booth. Darrell Waltrip will be back in Bristol. From NASCAR: NASCAR Hall of Fame driver Darrell Waltrip, who retired as a FOX NASCAR analyst at the conclusion of the 2019 season after 19 years with FOX Sports, will serve as the guest analyst for Sunday’s NASCAR Cup Series race alongside former colleague Mike Joy and analyst Clint Bowyer (7:00 PM ET on FOX). “After a couple of seaso…