Robert Siska (born December 1, 1942) is an American former

tennis Tennis is a racket sport that is played either individually against a single opponent ( singles) or between two teams of two players each ( doubles). Each player uses a tennis racket that is strung with cord to strike a hollow rubber ball ...

player and motorsport driver. A left-handed player from

San Francisco San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17th ...

, Siska made the singles third round of the 1959 U.S. National Championships as a teenager and competed on the international tour through the 1960s. He featured in the Wimbledon singles main draw four times and won his first round match in 1963, over

Ion Țiriac Ion Țiriac (; born 9 May 1939), also known as the "Brașov Bulldozer", is a Romanian businessman and former professional tennis and ice hockey player. He has been president of the Romanian Tennis Federation. A former singles top 10 player on ...

. At the tournament now known as the Cincinnati Masters, he reached the round of 16 in singles in 1965. Siska, who worked in

real estate Real estate is property consisting of land and the buildings on it, along with its natural resources such as crops, minerals or water; immovable property of this nature; an interest vested in this (also) an item of real property, (more general ...

, financed his own career in

motor racing Motorsport, motorsports or motor sport is a global term used to encompass the group of competitive sporting events which primarily involve the use of motorized vehicles. The terminology can also be used to describe forms of competition of tw ...

after tennis. He competed in several seasons of the

Atlantic Championship The Atlantic Championship is a formula race car series with races throughout North America. It has been called Champ Car Atlantics (after its former name), Toyota Atlantics (due to the series' previous history of using Toyota-powered engines) ...

and later in the Formula Renault. His best race result in the Atlantic Championship was a 10th-place finish (from 35 cars) at

Laguna Seca Raceway Laguna Seca Raceway (branded as WeatherTech Raceway Laguna Seca, and previously Mazda Raceway Laguna Seca) is a paved road racing track in central California used for both auto racing and motorcycle racing, built in 1957 near both Salinas and ...

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* {{DEFAULTSORT:Siska, Bobby 1942 births Living people American male tennis players Tennis players from San Francisco Racing drivers from San Francisco Atlantic Championship drivers Austrian Formula Three Championship drivers Formula Renault 2.0 WEC drivers Formula Renault 2.0 NEC drivers