Glenn Layendecker
Glenn Layendecker is a former professional tennis player from the United States. His highest singles ranking was World No. 48 in 1990. His highest doubles ranking was World No. 32. Layendeckers career wins included Andre Agassi, Michael Chang, Yannick Noah, Aaron Krickstein, Anders Jrryd, and Brad Gilbert in singles matches. He also beaned John McEnroe in the temple with an approach shot at the US Open.
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Source: Wikipedia