Question: Which player competed for SFR Yugoslavia, Nikola Pilić or Ross Case?

Context paragraphs:
Nikola Pilić: Nikola "Niki" Pilić (born 27 August 1939) is a retired Croatian professional tennis player who competed for SFR Yugoslavia.

Mustafa Arslanović: Mustafa Arslanović (born February 24, 1960 in Bosanski Novi, SFR Yugoslavia) is a Bosnian football defender who played for SFR Yugoslavia.  Arslanović earned his first and only international cap on 25 March 1987 with SFR Yugoslavia in a winning game against Austria.

Nenad Šalov: Nenad Šalov (born 6 October 1955 in Split, SFR Yugoslavia) is a Croatian former midfielder who played for SFR Yugoslavia.

Đorđe Vujkov: Đorđe Vujkov (born August 19, 1955 in Lok, SFR Yugoslavia) is a former Serbian defender who played for SFR Yugoslavia.

Aleksandar Trifunović (footballer): Aleksandar Trifunović (Serbian Cyrillic: Aлeкcaндap Tpифунoвић; born May 13, 1954 in Planinica village near Kraljevo, SFR Yugoslavia) is a Serbian former midfielder who played for SFR Yugoslavia.

Kodeksi: Kodeksi was a cover band from Sarajevo, Bosnia and Herzegovina, SFR Yugoslavia that existed from 1965 until 1971.  It is most notable as one of the predecessors to Bijelo dugme, the most commercially successful band ever to come out of SFR Yugoslavia.  Many of the future Bijelo dugme members came up through Kodeksi.

Ross Case: Ross Case (born 1 November 1951) is an Australian former tennis player.  His career-high singles ranking was world no. 14.

Drago Vabec: Dragutin Vabec, most commonly known as Drago Vabec (born 26 October 1950 in Zagreb, SFR Yugoslavia) is a Croatian left winger who played for SFR Yugoslavia, Dinamo Zagreb and Stade Brestois.  He is considered as one of the best players in Dinamo Zagreb history and the best player in Stade Brestois history.  His family originates from Čakovec, Međimurje County, and he spent most of his time there.

Muhamed Mujić: Muhamed Mujić (25 April 1933 – 20 February 2016) was a Bosnian footballer.  He played for Velež Mostar for the most of his career.  He also played at 1956 Summer Olympics for SFR Yugoslavia, winning a silver medal, and at the 1962 FIFA World Cup for SFR Yugoslavia.  In the Yugoslavia's game he served as captain in a brutal match that saw him break Soviet defender Eduard Dubinsky's leg, that partially caused his death, seven years later.  Although referee Albert Dusch took no action Mujić was sent home by his own federation.

Ognjen Petrović: Ognjen "Olja" Petrović (Serbian Cyrillic: Огњен Петровић; 2 January 1948 in Kruševac, Serbia, SFR Yugoslavia – 21 September 2000 in Belgrade, Serbia, FR Yugoslavia) is a Serbian goalkeeper who played at Euro 76 for SFR Yugoslavia.

Supporting paragraphs: Nikola Pilić Ross Case
Answer: Nikola "Niki" Pilić