In his message, Isaac said: "Nelson Mandela was a towering symbol of resistance, a leader, an activist, and a man who recognized the power of sport to inspire and bring people together.
"Mr Mandela never compromised his principles and his beliefs in justice and equality. As South Africa's first black President, Mr Mandela recognised and utilised sport as a mechanism to unite the divided people of South Africa and create a shared national identity and pride. As a statesman, he was remarkable, and as a man, he was inspirational."
Richardson said: "This is extremely sad news not only for all those in my home country of South Africa, but around the world. Mr Mandela was celebrated for his unwavering dedication to human rights, equality and respect.
"He was and will forever remain a true hero."
Nobel peace laureate and iconic anti-apartheid leader Nelson Mandela passed away at the age of 95 on Thursday night at his home in Houghton, Johannesburg surrounded by his family.
--IBNS (Posted on 06-12-2013)