Johnny Sexton started all three Lions Tests in 2013
British and Irish Lions fly-half Johnny Sexton's attention to detail means he has the potential to reach even greater heights, according to fellow Irishman Ronan O'Gara.
Sexton started all three tests during the Lions victorious tour of Australia in 2013 and, at just 29, is Ireland's third highest points scorer of all time.
O'Gara, a veteran of three British and Irish Lions tours himself, tops that list comfortably ahead of David Humphreys and Sexton.
He is also coach at Racing Metro, Sexton's current club for the remainder of the season, and believes the fly-half, who returned to playing against France earlier this month after a three month enforced absence due to concussion regulations, still has a few more levels to reach yet.
"Johnny the nerd, Johnny the perfectionist, there's times you slip into his car and you turn on the radio and he has French lessons on the radio, that's what you're dealing with," says O'Gara who is talking in the latest short film by Irish rugby team sponsors Three which focuses on Sexton's rise through the schools' rugby system with St. Mary's College to being the international and Lions' outhalf.
"Johnny is an exceptional outhalf. He prepares really well, he doesn't leave anything to chance on a Saturday. That's what we've seen and that's what you've got to do to be the best. He's just so driven to succeed.
"I also think there's more in the tank, I think we'll see him in the next two to three years hit a new level."