Tim McGraw has been forced to back out of his scheduled performance at a concert in Colorado next month due to his ongoing recovery from back surgery. Country group Cross Canadian Ragweed will take his place at the Last Cowboy Standing event on July 21 in Fort Collins, with Jon Pardi still set to headline on July 22. “[Cross Canadian Ragweed] is back together and ready to bring the house down in an unforgettable night of world-class music and the greatest bull riding on earth. You won’t want to miss it,” reads a statement from PBR CEO Sean Gleason, who added, “We’re sending our very best to Tim for a quick recovery and hope to see him at a future PBR event.” Ticket holders have the option of requesting a full refund. (People)