Jorge Lozano (born 17 May 1963 in San Luis Potosí) is a retired professional tennis player from Mexico.
 He reached his highest doubles ranking of World No. 4 in August 1988.
 His highest singles ranking was World No. 51, achieved the following month.
 During his career, he won two mixed doubles titles at the French Open: in 1990 with Arantxa Sánchez, and in 1988 with Lori McNeil.
 He reached the round of 16 in singles at the 1988 US Open and also the semifinal in doubles that same year.
 Qualified twice for the Doubles Masters at the Royal Albert Hall in London and reached the semifinals in 1988.
 In his career, he won nine doubles titles, but no singles titles.
 He turned professional in 1986, and in his career, he won $U.S.739,424 in prize money.
 He was the first player to be beaten by Pete Sampras in the main draw of a Grand Slam tournament, at the French Open in 1989.
 In Davis Cup play, represented Mexico for 15 years, 1981–1995, won 12 doubles matches, and lost 12 as well.
 He lost 11 singles matches, and won 8, making his overall win / loss record at the Davis Cup 20–23.
 Lozano won his first title at Forest Hills in 1988, with his partner Todd Witsken, and won his last at Athens in 1993.
 He resides in Guadalajara, Mexico where he directs a tennis academy for kids and also coaches the men and women tennis team at the University Tec de Monterrey.
 He is currently the captain of the Mexican Davis Cup Team.
Pamela Howard Shriver (born July 4, 1962) is an American former professional tennis player known primarily as a doubles specialist with success also as a singles player.
 She currently is a tennis broadcaster for ESPN.
 During the 1980s and 1990s, she won 133 titles, including 21 women's singles titles, 111 women's doubles titles and one mixed doubles title.
 In Grand Slam tournaments, Shriver won 21 doubles titles and one mixed doubles title.
 She also won a women's doubles gold medal at the 1988 Olympic Games in Seoul with Zina Garrison as her partner.
Leoš Friedl (born 1 January 1977 in Jindřichův Hradec) is an inactive Czech professional tennis player best known for his doubles play with František Čermák.
 He is coached by Lubomir Gerla.
 During his career, Friedl won 16 top-level doubles titles and the 2001 Wimbledon mixed doubles title with Daniela Hantuchová, where they beat Mike Bryan and Liezel Huber, 4–6, 6–3, 6–2.
Roberta Vinci (] ; born 18 February 1983) is an Italian tennis player.
 Up until 6 April 2015, she held the position of World No. 1 in doubles, while reaching a career-high of World No. 7 in singles in May 2016.
 She is the fourth Italian woman to have reached the top 10 in singles, together with Flavia Pennetta, Francesca Schiavone and Sara Errani.
 At 33 years and 4 days old, she is also the oldest ever player to make her first appearance in the Top 10.
Martina Hingis (born 30 September 1980) is a Swiss professional tennis player, a former world No. 1 singles player and currently ranked world No. 2 in doubles by the WTA.
 She has spent a total of 209 weeks as the singles No. 1 and has won five Grand Slam singles titles, thirteen Grand Slam women's doubles titles, winning a calendar-year doubles Grand Slam in 1998, and seven Grand Slam mixed doubles titles; for a combined total of twenty-five major titles.
 In addition, she has won the season-ending WTA Championships two times in singles and three times in doubles, and an Olympic silver medal.
This is a list of the main career statistics of Australian former tennis player Evonne Goolagong.
 During her career, which lasted from 1967 to 1983, Goolagong won seven singles titles at a Grand Slam event and was a runner-up on 11 occasions.
 In addition she won five Grand Slam doubles titles, partnering Margaret Court, Peggy Michel and Helen Gourlay, as well as one mixed doubles title with Kim Warwick.
 In total she won 82 singles titles, 46 doubles titles and 4 mixed doubles titles.
 She achieved a No. 1 singles ranking for a two-week period in April–May 1976 although this was only officially recognized in 2007.
 She was a member of the Australian Federation Cup teams that won the cup in 1971, 1973 and 1974.
Elizabeth Montague Ryan (February 5, 1892 – July 6, 1979) was an American tennis player who was born in Anaheim, California but lived most of her life in the United Kingdom.
 Ryan won 26 Grand Slam titles.
 Nineteen of those titles were in women's doubles and mixed doubles at Wimbledon, an all-time record for those two events.
 Twelve of her Wimbledon titles were in women's doubles and seven were in mixed doubles.
 Ryan also won four women's doubles titles at the French Championships, as well as one women's doubles title and two mixed doubles titles at the U.S. Championships.
Pam Teeguarden (born April 17, 1951) is a former American professional tennis player in the 1970s and 1980s, ranked in the top 20 from 1970–1975, according to "John Dolan's Women's Tennis Ultimate Guide", prior to computer rankings.
 She won two Grand Slam Doubles Titles and was a quarter finalist in singles at the U.S. Open and The French Open.
 Her father Jerry, a well known coach, helped Margaret Court win the coveted Grand Slam (all four Grand Slam titles in one year) in 1970 and Virginia Wade to her 1977 Wimbledon triumph.
 Teeguarden was voted the "Most Watchable Player" based on play and appearance by a group of Madison Avenue advertising executives or "Mad Men" while playing at the US Open.
 Teeguarden played in 19 consecutive US Opens, holding the record until Chris Evert played in 20.
 She wore the first all black outfit in the history of tennis in 1975 at The Bridgestone Doubles Championships in Tokyo, starting a trend that is still popular today.
 Teeguarden was the first woman tennis player signed by Nike.
 She played on the victorious Los Angeles Strings Team Tennis team in 1981 and won the Team Tennis Mixed Doubles Division with Tom Gullikson in 1977; they were also runners-up in the league that year.
This is a list of the main career statistics of Italian professional tennis player Sara Errani.
 She is currently ranked world no. 50 in singles and world no. 45 in doubles.
Sara Errani (] ; born April 29, 1987) is a professional tennis player from Italy.
 She has won nine career singles titles, and 25 career doubles titles, including five Grand Slam doubles championships and five Premier Mandatory/Premier 5 titles.

Question: Which tennis player won more doubles titles, Leoš Friedl or Sara Errani?
Answer: Sara Errani