Lindsay Davenport defeated the defending champion Martina Hingis in a rematch of the previous year's final, 6–4, 6–2 to win the singles tennis title at the 1999 WTA Tour Championships.
Seeds
Notes: Monica Seles had qualified but pulled out due to right foot stress fracture
Alternates Elena Likhovtseva (replaced Serena Williams, defeated in first round)
Draw
See also WTA Tour Championships appearances
References