Mary Caroline Pierce is a retired tennis professional who represented France internationally in team competitions and the Olympics. She was born in Canada to an American father and a French mother, and holds citizenship of all three countries.

Martina Hingis is a Swiss former professional tennis player. Hingis was the first Swiss player, male or female, to have won a major title and attain the world No. 1 ranking. She spent a total of 209 weeks as the singles world No. 1 and 90 weeks as doubles world No. 1, holding both No. 1 rankings simultaneously for 29 weeks. She won five major singles titles, 13 major women's doubles titles, and seven major mixed doubles titles, for a combined total of 25 major titles. In addition, she won the season-ending WTA Finals two times in singles and three in doubles, an Olympic silver medal in doubles, and a record 17 Tier I singles titles.