Justine Henin (French pronunciation:  [Zystin ene]; born 1 June 1982), between 2002 and 2007 Justine Henin-Hardenne, is a Belgian former professional tennis player known for her all-court style of play and notably being one of the few female players to use a single-handed backhand. She spent a total of 117 weeks as the world No. 1 and was the year-end No. 1 in 2003, 2006 and 2007.

Henin, known as "Juju" to many of her fans, was coached by Carlos Rodriguez of Argentina. In 1997, she won the junior girls' singles title at the French Open. Early in her senior career, she regularly reached the late rounds of international competitions and won five International Tennis Federation (ITF) tournaments by the end of 1998.  She began her professional career on the Women's Tennis Association tour in May 1999 as a wild card entry in the Belgian Open clay tournament at Antwerp and became only the fifth player to win her debut WTA Tour event. She also won her hometown event, the Liege Challenger, in July 2000.  Henin established herself as a major competitor in 2001, consequently reaching the women's singles semifinals of the French Open and then upset the reigning Australian Open and French Open champion Jennifer Capriati in the semifinals of Wimbledon, losing to defending champion Venus Williams in three sets in the final. By the end of the year, Henin was ranked 7th in singles, with three titles to her name. Also that year, she reached the French Open women's doubles semifinals with Elena Tatarkova and helped Belgium win the 2001 Fed Cup.  In 2002, she reached four WTA finals, winning two of them, and finished the year ranked world No. 5. Her German Open victory, her first win at a Tier I tournament, was noteworthy as she beat Jennifer Capriati in a semifinal and Serena Williams in the final, the then No. 2 and No. 5 ranked players, respectively. At Wimbledon 2002, Henin beat former world No. 1, Monica Seles, in two tough sets.

Using a quote from the above article, answer the following question: What else is significant?
Henin established herself as a major competitor in 2001, consequently reaching the women's singles semifinals of the French Open