Parker McCollum breaks a venue sales record at Whitewater Amphitheater in Texas

Parker McCollum's stalwart and rapidly expanding fan base showed up in record numbers at a recent three-night stand in New Braunfels, Texas.

Some of country music's biggest names are taking notice of Parker. Over Memorial Day weekend, he opened for Eric Church at a Major League Baseball stadium show in Milwaukee. He'll return to another stadium at the end of the month, opening a Kansas City show for George Strait.

Meanwhile, Parker's also on the road with Thomas Rhett this summer for Thomas' Bring the Bar to You Tour. Conner Smith is also on that lineup.