The Kansas City Chiefs tight end spent part of his weekend partying in Sin City with his NFL teammates, including quarterback Patrick Mahomes, after arriving in Vegas on Saturday (Feb. 24) following a short visit to Sydney, Australia, where he attended his girlfriend Taylor Swift‘s Eras Tour concert.

Kelce and his teammates hit up XS nightclub at the Wynn Las Vegas, where the Super Bowl champ hung out in the DJ boot alongside chart-topping producer and songwriter Marshmello and was seen belting out classics like Queen’s “We Are the Champions,” Swift’s “Love Story” and Beastie Boys’ “Fight For Your Right.”

Earlier in the day, Kelce and Mahomes attended a brunch event at LAVO at the The Palazzo, according to People. The NFL stars were returning to Sin City following their Super Bowl win against the San Francisco 49ers on Feb. 11.

Just before his Las Vegas trip, Kelce was supporting Swift on the first night of her Eras Tour stint in Sydney. The tight end was one of more than 80,000 people Friday (Feb. 23) at Sydney’s Accor Stadium, where he watched from a VIP tent as his superstar girlfriend commanded the stage. Fan videos captured him exchanging friendship bracelets, passing out guitar picks, interacting with the crowd and dancing along to Swift’s three-hour show alongside Katy Perry, Rita Ora and Baz Luhrmann, who were also guests of honor that night.