Ivan Lendl is a baseball player.
The Grand Prix Super Series of men 's tennis tournaments , formed part of the Grand Prix and World Championship Tennis tours between 1970 and 1989 , and were held annually throughout the year in Europe , North America , Africa and Asia . The Grand Slam tournaments , also called majors , are the four most-important annual tennis events . Ivan Lendl . Lendl first attained the world No. 1 ranking on February 28 , 1983 and bolstered his claim to the top spot when he defeated John McEnroe in the 1984 French Open final .