Robert Lutz (born August 29, 1947) is a former amateur and professional tennis player of the 1960s and 1970s.
 He and his longtime partner Stan Smith were one of the best doubles teams of all time.
 Bud Collins ranked Lutz as World No. 7 in 1972.
 Between 1967 and 1977 he was ranked among the top-10 American players 8 times, with his highest ranking being No. 5 in both 1968 and 1970.
Chanda Rubin and Arantxa Sánchez Vicario were the defending champions but they competed with different partners that year, Rubin with Brenda Schultz-McCarthy and Sánchez Vicario with Larisa Savchenko.
Steffi Graf was the defending champion, but she was defeated in the final by Arantxa Sánchez Vicario, marking the last time Sánchez Vicario defeated Graf at any tournament.
Conchita Martínez was the defending champion, but she lost to Arantxa Sánchez Vicario in the semifinals.
 Steffi Graf defeated Sánchez Vicario 4–6, 6–1, 7–5 in the final to win the Ladies' Singles tennis title at the 1995 Wimbledon Championships, giving Graf the sixth Wimbledon title of her career.
Jana Novotná and Arantxa Sánchez Vicario were the defending champions but only Sánchez Vicario competed that year with Mary Joe Fernández.
Aránzazu Isabel María "Arantxa" Sánchez Vicario (] ; born 18 December 1971) is a Spanish former World No. 1 professional tennis player.
 She won four Grand Slam singles titles, six Grand Slam women's doubles titles, and four Grand Slam mixed doubles titles.
 In 1994 she was crowned the ITF World Champion for the year.
Larisa Savchenko and Arantxa Sánchez Vicario were the defending champions but they competed with different partners that year, Savchenko with Helena Suková and Sánchez Vicario with Mary Joe Fernández.
Gigi Fernández and Arantxa Sánchez Vicario were the defending champions but only Sánchez Vicario competed that year with Manon Bollegraf.
Arantxa Sánchez Vicario and Todd Woodbridge were the defending champions but they competed with different partners that year, Sánchez Vicario with Emilio Sánchez and Woodbridge with Helena Suková.
Steffi Graf was the defending champion, and she successfully defended her title, defeating Arantxa Sánchez Vicario in the final, in what was a rematch of last year's final.
 With the victory, Graf captured her seventh and final Wimbledon crown, while it marked Sánchez Vicario's last appearance in the ladies' championship match.

Question: Arantxa Sánchez Vicario and Bob Lutz, have which mutual occupation?
Answer: professional tennis player