James Christopher Carmack (born December 22, 1980) is an American actor, singer, and former fashion model. He is known for his roles in popular television shows—the teen drama series The O.C. (2003–2004) as Luke Ward, the country music drama Nashville as Will Lexington (2012–2018), and the medical drama Grey's Anatomy (2018–present) as Dr. Atticus "Link" Lincoln