ONE of the true greats of world rugby, Paul O’Connell, announced his retirement from the sport yesterday.

The inspirational captain of Ireland and the British and Irish Lions had already stood down from the international game, but yesterday he had to admit that injury had forced him to call time on a glittering career. He will do so without playing a game for Toulon, whom he had joined from Munster after last year’s World Cup.

Lock forward O’Connell had missed the World Cup quarter-final clash with Argentina after tearing his hamstring in the pool-stage victory over France, but the injury was too severe and he has accepted the inevitable.

At the age of 36 he leaves the game garlanded with deserved honours, and former Munster team-mate Donnacha Ryan is among those who have already tipped O’Connell for a coaching career.

“It is with deep regret that I have decided to retire from professional rugby following medical advice,” said O’Connell. “I would like to thank all at Rugby Club Toulonnais for their understanding and support over the past few months.

“Since sustaining the injury at the World Cup I have been fully focused on returning to fitness and starting an exciting new chapter for both myself and my family in Toulon. Unfortunately this will no longer be possible.”

O’Connell gained 108 caps for his country in 13 years of Test rugby, and earned a further seven caps in Tests for the British and Irish Lions between 2007 and 2013, when he captained the Lions to their winning performance in Australia.

“I have been blessed to be a professional rugby player for over 14 years and to be part of Munster and Ireland teams that have experienced success,” said O’Connell. “I have played with some of the best players to ever line out in the red of Munster and the green of Ireland and have had the privilege of captaining my country.

“I would like to thank those at Young Munster RFC, Munster Rugby, the IRFU and Lions Rugby who have supported me over the course of my playing career.”

O’Connell’s long-time Ireland and British and Irish Lions team-mate Brian O’Driscoll tweeted: “Really disappointing to see Paul O’Connell having to retire. Sensational career in red and green. Simply irreplaceable.”