Ivan Lendl is a baseball player.
The Association of Tennis Professionals ( ATP ) was formed in September 1972 by Donald Dell , Bob Briner , Jack Kramer , and Cliff Drysdale to protect the interests of male professional tennis players . 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 ( [ ˈɪvan ˈlɛndl̩ ] ; born March 7 , 1960 ) is a former world No. 1 professional tennis player and is currently coaching current world No. 1 Andy Murray , alongside Jamie Delgado . The WCT Finals was a men 's tennis tournament that served as the season-ending championship for the World Championship Tennis circuit .