Juan Gisbert, Sr. played amateur and professional tennis in the 1960s and 1970s. He was ranked as high as No. 32 in the world in singles on the ATP Rankings (achieving that ranking on April 8, 1975).

He won one singles title and reached the finals at the Australian Championships

Australian Open

The Australian Open is the only Grand Slam tennis tournament held in the southern hemisphere. The tournament was held for the first time in 1905 and was last contested on grass in 1987. Since 1972 the Australian Open has been held in Melbourne, Victoria. In 1988, the tournament became a hard court...

 in 1968 and Cincinnati

Cincinnati Masters

The Cincinnati Open is an annual outdoor hardcourts tennis event held in the Cincinnati suburb of Mason, Ohio, USA. The event started on September 18, 1899 and is the oldest tennis tournament in the United States played in its original city., Between...

 in 1971.

Singles: 1 (0-1)

Outcome	Year	Championship	Surface	Opponent in the final	Score in the final
Runner-up	1968 1968 Australian Championships - Men's Singles Roy Emerson was the defending champion but did not compete that year.William Bowrey won in the final 7–5, 2–6, 9–7, 6–4 against Juan Gisbert, Sr..-Seeds:...	Australian Championships Australian Open The Australian Open is the only Grand Slam tennis tournament held in the southern hemisphere. The tournament was held for the first time in 1905 and was last contested on grass in 1987. Since 1972 the Australian Open has been held in Melbourne, Victoria. In 1988, the tournament became a hard court...	Grass	William Bowrey William Bowrey William "Bill" Bowrey is a former Australian male tennis player.Bowrey was born in Sydney, New South Wales, Australia and is best remembered as the last amateur to win the Australian Championships in 1968 before the tournament opened itself for professional tennis players in 1969.-Biography:Bowrey...	7–5, 2–6, 9–7, 6–4

Career highlights

Career Singles Titles (1):

• 1975—Shreveport

Career Singles Finals (6):

• 1968--Australian Championships
  Australian Open
  The Australian Open is the only Grand Slam tennis tournament held in the southern hemisphere. The tournament was held for the first time in 1905 and was last contested on grass in 1987. Since 1972 the Australian Open has been held in Melbourne, Victoria. In 1988, the tournament became a hard court...
  
  ;
• 1971--Cincinnati
  Cincinnati Masters
  The Cincinnati Open is an annual outdoor hardcourts tennis event held in the Cincinnati suburb of Mason, Ohio, USA. The event started on September 18, 1899 and is the oldest tennis tournament in the United States played in its original city., Between...
  
  ;
• 1972—New York;
• 1974—Cedar Grove, Tokyo WCT;
• 1975—Barcelona

Career Doubles Titles (20):

• 1976—Munich, Valencia;
• 1975--Hamburg
  Hamburg Masters
  The German Open Hamburg, established in 1892, is an annual tennis tournament for male professional players held in Hamburg, Germany and part of the Association of Tennis Professionals Tour. Originally a Grand Prix Tennis Tour event between 1978 and 1989 it was part of the Grand Prix Championship...
  
  , Shreveport, Boca Raton, Bournemouth, Calcutta, Indianapolis, Tehran;
• 1974—Barcelona, Bournemouth;
• 1973--Monte Carlo, Paris
  Paris Masters
  The Paris Masters is an annual tennis tournament for male professional players held in Paris, France. It is played indoors at the Palais Omnisports de Paris-Bercy. The event is part of the ATP World Tour Masters 1000 on the Association of Tennis Professionals Tour...
  
  , Barcelona;
• 1972—Barcelona, Brussels, Eastbourne;
• 1971—Barcelona WCT, New York, Salisbury

Career Doubles Finals (17):

• 1976--Canada
  Canada Masters
  The Canada Masters , currently sponsored as the Rogers Cup, is an annual tennis tournament held in Canada. The men's competition is a Masters 1000 event on the Association of Tennis Professionals tour. The women's competition is a Premier 5 tournament on the Women's Tennis Association tour...
  
  , Bastad, Bournemouth, Tehran, Johannesburg - WCT;
• 1975—Bastad, Madrid, Tokyo, Roanoke;
• 1974--Rome
  Rome Masters
  The Italian Open is an annual tennis tournament held in Rome, Italy. It is the most prestigious red clay tennis tournament in the world after the French Open, with the men's competition being an ATP World Tour Masters 1000 event on the Association of Tennis Professionals tour, and the women's...
  
  , Tokyo WCT;
• 1973—Omaha, Salisbury, Florence, Des Moines;
• 1972--Paris
  Paris Masters
  The Paris Masters is an annual tennis tournament for male professional players held in Paris, France. It is played indoors at the Palais Omnisports de Paris-Bercy. The event is part of the ATP World Tour Masters 1000 on the Association of Tennis Professionals Tour...
  
  , Salisbury