Keres played for the USSR in seven successive Chess Olympiads, wining seven team medals, and five individual board medals. Due to these and other strong results, many commentators consider Keres to be the strongest player never to become World Chess Champion. He was nicknamed "The Crown Prince of Chess".<ref name="H/W">Hooper D. and Whyld K. 1992. "The Oxford companion to chess". 2nd ed, Oxford University Press.</ref>