question: Was Kristie Boogert or Alex O'Brien ranked higher as a singles player?
answer: No. 30 in singles
context: Title: 1996 SEAT Open – Doubles
  Passage: Kristie Boogert and Nathalie Tauziat won in the final 2–6, 6–4, 6–2 against Barbara Rittner and Dominique Van Roost.
  Title: Lorna Woodroffe
  Passage: Lorna Woodroffe (born 18 August 1976) was an English Olympic tennis player.  Lorna competed in the 2000 Summer Olympics in Sydney, Australia.  Playing with Julie Pullin, Lorna lost her first-round match in the Women's doubles to Kristie Boogert and Miriam Oremans of the Netherlands, in two sets.
  Title: 1997 Sparkassen Cup – Doubles
  Passage: Kristie Boogert and Nathalie Tauziat were the defending champions but only Boogert competed that year with Amanda Coetzer.
  Title: 1995 Schweppes Tasmanian International – Doubles
  Passage: Linda Harvey-Wild and Chanda Rubin were the defending champions but they competed with different partners that year, Harvey-Wild with Leila Meskhi and Rubin with Kristie Boogert.
  Title: 2000 Australian Open – Mixed Doubles
  Passage: Mariaan de Swardt and David Adams were the defending champions but only Adams competed that year with Kristie Boogert.
  Title: 1996 Wilkinson Lady Championships – Doubles
  Passage: Larisa Neiland and Brenda Schultz-McCarthy won in the final 6–4, 7–6 (9–7) against Kristie Boogert and Helena Suková.
  Title: Alex O'Brien
  Passage: Alex O'Brien (born March 7, 1970 in Amarillo, Texas) is a retired professional tennis player from the United States, who competed on the ATP Tour.  He became the world No. 1 doubles player in May 2000 and was ranked as high as world No. 30 in singles in June 1997.
  Title: Kristie Boogert
  Passage: She has not won any singles titles, but did win three titles in doubles.  At the 1994 French Open championships she won the mixed doubles title with countryman Menno Oosting.
  Title: 1997 SEAT Open – Doubles
  Passage: Kristie Boogert and Nathalie Tauziat were the defending champions but only Boogert competed that year with Amanda Coetzer.
citations: Alex O'Brien Kristie Boogert