Mel Purcell and Stan Smith were the defending champions but lost in the quarterfinals to Wojciech Fibak and Sandy Mayer.
Wojciech Fibak and Sandy Mayer were the defending champions but did not compete that year.
Vytautas Kevin Gerulaitis (July 26, 1954 – September 17, 1994) was an American professional tennis player.
 In 1975, Gerulaitis won the men's doubles title at Wimbledon, partnering with Sandy Mayer.
 He won the men's singles title at one of the two Australian Open tournaments held in 1977 (Gerulaitis won the tournament that was held in December, while Roscoe Tanner won the earlier January tournament).
 Gerulaitis also won two Italian Open titles, in 1977 and 1979, and the WCT Finals in Dallas, in 1978.
The Djokovic–Nadal rivalry is between tennis players Novak Djokovic and Rafael Nadal, who are engaged in a modern-day tennis rivalry.
 The rivalry is the most prolific of the Open Era.
 The two have faced each other 50 times with Djokovic leading 26–24.
 Between 2006–2010, this rivalry was often overshadowed by the historic Federer–Nadal rivalry, but it started to become widely recognized after they played their first Grand Slam final against each other at the 2010 US Open.
 The first half of the rivalry was dominated by Nadal (who led 16–7 after the 2010 season) while the second half has been dominated by Djokovic, winning 11 out the last 13 matches.
 It is widely considered to be one of the greatest rivalries in tennis history.
 It was the first rivalry to involve meetings at all 4 Grand Slam finals (including four consecutive Grand Slam finals) and a record 26 Masters Series matches.
 Their 2012 Australian Open final is considered to be one of the greatest matches of all time, and Mary Carillo and John McEnroe both commented that that Australian Open match and the 2013 French Open semi-final match were the two best matches played on hard and clay courts respectively.
 The Djokovic–Nadal rivalry was listed as the third greatest rivalry in the last decade in 2009 by "ATPworldtour.com" despite its only starting in 2006.
Colin Dibley and Sandy Mayer were the defending champions but only Dibley competed that year with Haroon Rahim.
The Guadalajara Open is a defunct tennis tournament that was played on the Grand Prix tennis circuit in 1978.
 The event was held in Guadalajara, Mexico and was played on outdoor clay courts.
 Gene Mayer won the singles title while Sandy Mayer and Sherwood Stewart partnered to win the doubles title.
Alexander "Sandy" Mayer (born April 5, 1952) is a former tennis player from the United States, who won ten titles in singles and twenty-four titles in doubles during his professional career.
 He was part of the winning tennis squad at Stanford University in 1973.
Mary Carillo (born March 15, 1957) is an American sportscaster and former professional tennis player.
 She is a reporter for NBC Sports and NBC Olympics.
Gene Mayer and Sandy Mayer were the defending champions and were one of sixteen teams in the second round.
The 1981 World Championship Tennis Finals was a men's tennis tournament played on indoor carpet courts.
 It was the 11th edition of the WCT Finals and was part of the 1981 Volvo Grand Prix.
 The tournament was played at the Reunion Arena in Dallas, Texas in the United States and was held from April 27 through May 3, 1981.
 The winners of the eight WCT tournaments that were part of the 1981 Grand Prix circuit qualified for the tournament augmented by the next best performers in the WCT points standings.
 Guillermo Vilas qualified by winning the last tournament held just before the WCT Finals, the River Oaks Tournament in Houston, but was unavailable to play.
 Jimmy Connors withdrew before the tournament due to gastroenteritis and Yannick Noah could not participate due to a shoulder injury.
 They were replaced by Sandy Mayer and Sam Giammalva respectively.
 John McEnroe won the title and $100,000 prize money.

Question: Who was born first Mary Carillo or Sandy Mayer? 
Answer: Alexander "Sandy" Mayer