Historical clue formulations

• Winner of six Grand Slam men's singles titles from 1985 to 1992 — 2019-03-29
• Tennis's Stefan — 2011-05-09
• Tennis great Stefan — 2007-09-06
• 1992 U.S. Open champion — 2003-10-17
• 1988 Wimbledon champ — 2003-02-07