ESPN.com - TENNIS/USOPEN99 - Serena upsets Hingis to win first Grand Slam
Too exciting to compute' - How Serena Williams landed the first of her 23 Slams at the US Open 20 years ago
The Tribune, Chandigarh, India - Sport
Williams Sisters Leave an Impact That's Unmatched - The New York Times
T365 Recall: The brilliant yet fleeting rivalry of Venus Williams and Martina Hingis - Tennis365
Martina Hingis v Serena Williams - Australian Open 2001 Quarter Final | AO Classics - YouTube
2014 Sony Open Champions: Serena Williams, Martina Hingis & Sabine Lisicki, Novak Djokovic, The Bryan Brothers | Fairways and Forehands
Classic Rivalries: Williams vs. Hingis - TennisPAL
I Never Liked Martina Hingis, But I Learned To Appreciate Her Work - UBITENNIS
USA's Serena Williams (R) shakes hands with Switzerland's Martina Hingis after withdrawing from the finals of the Canadian Open in Montreal, August 20, 2000. Williams left the match because of a foot
In Pics | A look at Sareena Williams' six memorable Grand Slam finals
Tennis news: "They always have a big mouth" – When Martina Hingis got involved in a controversy with Richard, Venus and Serena Williams at 1999 US Open
11 Sep 1999: Serena Williams of the USA is congratulated by Martina Hingis of Switzerland after their US Open final (Clive Brunskill/Allsport) | Tennismash
Serena Williams celebrates her victory over Martina Hingis in the 1999 US Open final (Getty Images) | Tennismash
Martina Hingis vs Serena Williams 2001 Australian Open QF Highlights - YouTube
Venus Williams of the US, her sister Serena Williams, Anna Kournikova... News Photo - Getty Images
Martina Hingis | Biography, Titles, & Facts | Britannica
Sept. 1, 1999 - K16475AR: ''99 US OPEN AT FLUSHING MEADOWS, NY. 09/03/99.SERENA WILLIAMS DEFEATS MARTINA HINGIS. ANDREA RENAULT/ 1999(Credit Image: © Globe Photos/ZUMAPRESS.com Stock Photo - Alamy
Serena Williams (USA) with Martina Hingis (SWI) wins her first Grand Slam at the 1999 US Open Tennis Championship Stock Photo - Alamy
Serena Williams begins US Open with a convincing singles win | CNN
Serena vs. Hingis: When teenage Grand Slam finals were the norm - Official Site of the 2022 US Open Tennis Championships - A USTA Event
U.S. Open 2014: Serena Williams Appears to Be in a Class by Herself - The New York Times
Felt Like Playing a Steamroller'- When Serena Williams' Ferocious Play Made Martina Hingis Insecure About Her Own Game - EssentiallySports
Serena Williams (USA) with Martina Hingis (SWI) wins her first Grand Slam at the 1999 US Open Tennis Championship Stock Photo - Alamy
Tennis news - The best 40 stats, from Grand Slam wins to records, to celebrate Serena Williams's 40th birthday - Eurosport
