Belgian Open (tennis) However, Sabine Appelmans, Kim Clijsters and Els Callens all won the doubles event. 1987: Knokke 1988-89: Brussels 1992: Waregem 1993: Liège 1999-2001: Antwerp Belgian Open (tennis) The Belgian Open was a WTA Tour tennis event held over three different periods during 1987–2002. The competition took place in July during 1987–1989 and 2002, and in May during 1992–1993 and 1999–2001. During 2000–2001 it was sponsored by Dutch clothing chain Mexx and renamed the "Benelux Open". The competition was played on outdoor clay courts. The tournament was a Tier V event in 1992 and 2001. The tournament was a Tier IV event
US Open (tennis) (clay and hard). The US Open is the only Grand Slam tournament that has been played every year since its inception. During the 2006 US Open, the complex was renamed to "USTA Billie Jean King National Tennis Center" in honor of Billie Jean King, a four-time US Open singles champion and women's tennis pioneer. From 1984 through 2015, the US Open deviated from traditional scheduling practices for tennis tournaments with a concept that came to be known as "Super Saturday": the men's and women's finals were played on the final Saturday and Sunday of the tournament respectively, and their respective