Clark played "Catfish Blues" and "In the Evening (When the Sun Goes Down)", as well as contributing to performances of "Let the Good Times Roll", "Beat Up Old Guitar", "Five Long Years" and "Sweet Home Chicago". In June 2012, Clark guested with the Dave Matthews Band playing "Can't Stop" and "All Along the Watchtower" at dates in Virginia Beach and Indianapolis and on October 21 and 22, 2012, Clark appeared as the opening act at the Bridge School Benefit Concert, Bridge XXVI. On December 8, 2012, Clark appeared at The Rolling Stones' first US-gig of their 50th anniversary tour at the Barclay's Center in Brooklyn, to perform the Don Nix song "Going Down" with the band. On December 15, 2012 he joined them onstage again to play the same song, along with John Mayer, during the last date of the Stones' mini-tour at the Prudential Center. On May 13, 2013, Clark opened for Eric Clapton & His Band at the LG Arena, Birmingham, England, and on June 12, 2013, Clark was the guest performer with the Rolling Stones at Boston's TD Garden. Clark joined the Stones in playing the Freddie King tune "Going Down". On June 30, 2013, he appeared on the Avalon stage at the Glastonbury Festival. His performance was declared 'the most electric performance of the festival, knocking the legendary appearance of The Rolling Stones (the previous night) well into second place' and on October 25, 2013, he appeared on long-running British music show "Later... with Jools Holland". On February 9, 2014, Clark performed The Beatles song "While My Guitar Gently Weeps", along with Dave Grohl and Joe Walsh for . On February 16, 2014, Clark performed in the NBA All-Star Game Halftime Show with Trombone Shorty, Earth Wind and Fire, Doctor John, and Janelle Monáe and on May 29, 2014, Gary Clark Jr performed solo at Rock in Rio in Lisbon. Clark performed guitar, as a guest, on an episode of the PBS cable television show "Austin City Limits", with the Foo Fighters, that aired on February 7, 2015. He and the Foo Fighters were accompanied, on stage, by another guest guitarist, Jimmie Vaughan. On May 24, 2015, Clark opened for The Rolling Stones at Petco Park in San Diego and on July 4, 2015, played as part of the lineup for the Foo Fighters 20th Anniversary show at RFK Stadium in Washington D.C.