Two legends performing a song by two legends. That's what fans got to see when they attended the George Strait concert at Met Life Stadium in New Jersey over the weekend. Chris Stapleton has been opening the shows on King George's current tour, occasionally joining Strait on stage. Over the weekend, fans were treated to the two performing the 1983 Willie Nelson/Merle Haggard classic "Pancho & Lefty." As an encore that same evening, Strait brought out Tom Petty & The Heartbreakers guitarist Mike Campbell to join him on a cover of Petty's "You Wreck Me."