For many sports fans, Sundays are for football -- and it seems Taylor Swift had a full day of it. The pop star watched the early games with Bernie Kosar, a former Pro Bowl quarterback who played in the 1980s and 90s. Tony Oliva Jersey Kosar shared a couple pictures of him and Swift on X, the social media platform formerly known as Twitter. They watched the -- one of Kosar's former teams -- beat the , 39-38. Kosar never played for the , but he Harmon Killebrew Jersey donned a red jacket while Swift wore a Chiefs shirt in the photos. Watching the Browns game with pre KC game. Tough to see Deshaun Hurt!!! Bernie Kosar (@BernieKosarQB) Halftime for the KC game now. . with a phenomenal first half!!! Bernie Kosar (@BernieKosarQB) Seems like Kosar is a big fan because he snapped a few photos, when Swift was already at Arrowhead Stadium watching the and the Chiefs play Bert Blyleven Jersey against the .After winning a national championship with the Miami Hurricanes in 1983, Kosar played 12 years in the with the Browns, and . He was part of the Cowboys team that won XXVIII. Also on Sunday, Kosar shared a photo of Travis and wearing his jersey when they were younger, which probably explains why he was supporting Travis' team this weekend."What an honor to have two future hall of famers (@tkelce & @JasonKelce) wearing Josh Donaldson Jersey my jersey as kids," Kosar wrote. What an honor to have two future hall of famers ( & ) wearing my jersey as kids. | Mitch Garver Jersey Bernie Kosar (@BernieKosarQB) The Chiefs ended up beating the Chargers, 31-17, to improve to 6-1 this season. Next up, they will be heading to Denver to take on the next Sunday.