Johnny Sexton dreamed of becoming a rugby legend from the moment he was born.

But someone was standing in his way. The Irish team already had a star fly-half in Ronan O’Gara and he wasn’t ready to give up his place. So began one of the great rivalries of Irish sport. Could Johnny go all the way to kick Ireland to grand slam glory?

Paul O’Flynn is an RTÉ News and Sport presenter and journalist. He is a keen sportsman and amateur swimmer and in 2018 was the winner of the Liffey Swim. He has written three Irish Sporting Legends biographies, Josh the Flyer, King Henry and Go, Johnny, Go!