Home›Articles›Steffi Graf's 1988 Golden SlamArticleSteffi Graf's 1988 Golden SlamArticlesConnectionsSourcesComments (0)Reader Challenges (0)ConnectionsArticle OnSteffi Graf, Athletes Well-attested SourcesWikipedia, Steffi Graftier 2Wikimedia FoundationGolden Slam: 1988 sectionQuote, Golden Slam: 1988 sectionGraf's 1988 Grand Slam remains the only one in history completed on three surfaces (grass, clay, hard court), as all other Grand Slams in tennis history were achieved prior to the introduction of hard court at the US Open in 1978.View the SourceSport and Games Atlas Long-Form Articles, First EditionSport and Games AtlasComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.