Former South Africa captain Jean de Villiers has hailed New Zealand's Richie McCaw after he announced his retirement.
The two Test centurions crossed paths several times at Super Rugby and international level.
McCaw captained New Zealand in 110 Tests, a world record, and under his captaincy, the All Blacks won the Bledisloe Cup ten times, as well as seven Rugby Championship/Tri Nations titles, two Grand Slams and two Rugby World Cups.
De Villiers described his old rival as "probably the best to ever play the game" in a moving tribute.
“We all know that at some stage we will have to hang up our boots and say good-bye to this game we love so much,” said De Villiers.
“All we then have left are memories and Richie can be immensely proud of the memories he has helped create on and off the field.
“He has been superb and what he has achieved on the field, as an individual and as captain of the All Blacks, is nothing short of unbelievable.
"The whole of New Zealand can be very proud of him. Richie will probably go down as the best who has ever played his game and his achievements will last forever.”