Sports Greats Wish Usain Bolt a Fond Farewell

By Duarte Mendonca and Mark Baron, CNN

(CNN) -- Usain Bolt is a man universally loved, admired for his historic achievements and his joie de vivre.

At the IAAF World Championships in London on Saturday, the 30-year-old Jamaican ran his final races. Eight Olympic gold medals, 11 World Championships golds, the fastest man in history has left a lasting legacy.

As Bolt brings the curtain down on an incomparable career, we have collected fond farewells from fans and world stars who tell us why they admire the greatest sprinter in history.

To find out what former Germany captain Bastain Schweinsteiger, four-time Olympic gold medalist Simone Biles, four-time Formula One world champion Alain Prost and the Jamaican's compatriot and team-mate Yohan Blake had to say, watch the video at the top of this page.