The 1998 Newsweek Champions Cup and the State Farm Evert Cup were tennis tournaments played on outdoor hard courts. It was the 25th edition of the Indian Wells Masters and was part of the Super 9 of the 1998 ATP Tour and of Tier I of the 1998 WTA Tour. Both the men's and women's tournaments took place at the Grand Champions Resort in Indian Wells, California in the United States from March 5 through March 15, 1998.

Finals

Men's singles

Marcelo Ríos defeated 🇬🇧 Greg Rusedski 6–3, 6–7(15–17), 7–6(7–4), 6–4

Women's singles

Martina Hingis defeated 🇺🇸 Lindsay Davenport 6–3, 6–4

Men's doubles

🇸🇪 Jonas Björkman / 🇦🇺 Patrick Rafter defeated 🇺🇸 Todd Martin / 🇺🇸 Richey Reneberg 6–4, 7–6

Women's doubles

🇺🇸 Lindsay Davenport / 🇧🇾 Natasha Zvereva defeated 🇫🇷 Alexandra Fusai / 🇫🇷 Nathalie Tauziat 6–4, 2–6, 6–4