Ryan O'Reilly (born February 7, 1991) is a Canadian professional ice hockey centre and captain of the St. Louis Blues of the National Hockey League (NHL). He has previously played for the Colorado Avalanche and Buffalo Sabres.
O'Reilly was drafted 33rd overall in the 2009 NHL Entry Draft by the Colorado Avalanche, with whom he spent the first six seasons of his NHL career. Nicknamed "the Factor", O'Reilly is frequently referred to as one of the NHL's best two-way forwards, winning the Frank J. Selke Trophy in 2019. In 2015, O'Reilly was traded to the Buffalo Sabres, where he would play three seasons until being traded to the Blues in 2018. O'Reilly won the Stanley Cup with the Blues in 2019 over the Boston Bruins and was awarded the Conn Smythe Trophy as the most valuable player in the 2019 playoffs.