Sexton is one of Ireland's two Vice-Captains internationally, having made his debut for Ireland in 2009.
He has also previously represented the British and Irish Lions in both 2013 and 2017 and has scored over 700 points in his international career, making him one of the highest points-scorers in rugby union history.
Sexton was the winner of World Rugby Player of the Year in 2018, having previously been a nominee for the award in 2014.
He is only the second Irish player in history to win the award, after inaugural winner, Keith Wood, in 2001.
Sexton became the 106th player to captain Ireland when he led the team out at their 2019 Rugby World Cup 3rd Pool A Group match at the Kobe Misaki Stadium in Japan on Thursday 3rd October 2019.