Amy Williams of Great Britain
Gabby Douglas won the all around title for womens gymnastics.
Only one in the womens skeleton
Martina Navratilova was the womens single champion in 1984
Paula Creamer won it in 2010
Russia's Alexander Tretiakov won gold for men's skeleton. UK's Elizabeth Yarnold won gold in women's skeleton
Women
No.
Lindsay Davenport was the womens champion in the year 1999
Yes there was a womens world cup in 2011, and Japan won it.
Germany
Lindsay Davenport
Serena Williams