| Singles | |
|---|---|
| 1979 Romika Cup | |
| Champion |  Manuel Orantes |
| Runner-up |  Wojtek Fibak |
| Final score | 6–3, 6–2, 6–4 |
| Draw | 32 |
| Seeds | 8 |
Guillermo Vilas was the defending champion, but did not participate this year.
Manuel Orantes won the title, defeating Wojtek Fibak 6–3, 6–2, 6–4 in the final.
Manuel Orantes (Champion) Wojtek Fibak (Final)
Balázs Taróczy (Second Round)
Víctor Pecci, Sr. (Second Round)
Tom Okker (Second Round)
Ulrich Pinner (Second Round) Rolf Gehring (Second Round)
Željko Franulović (Second Round)| Semifinals | Final | ||||||||||||||
| 1 | Manuel Orantes | 6 | 6 | ||||||||||||
 Jiří Hřebec | 4 | 2 | |||||||||||||
| 1 | Manuel Orantes | 6 | 6 | 6 | |||||||||||
| 2 | Wojtek Fibak | 3 | 2 | 4 | |||||||||||
| Q |  Andrés Gómez | 4 | 1 | ||||||||||||
| 2 | Wojciech Fibak | 6 | 6 | ||||||||||||
| First Round | Second Round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | M Orantes | 6 | 6 | ||||||||||||||||||||||||
 R Case | 0 | 1 | 1 | M Orantes | 2 | 6 | 6 | ||||||||||||||||||||
 R Simpson | 6 | 6 | R Simpson | 6 | 4 | 3 | |||||||||||||||||||||
| G Gnettner | 0 | 3 | 1 | M Orantes | 6 | 3 | 6 | ||||||||||||||||||||
| P Hutka | 6 | 5 | W Zirngibl | 1 | 6 | 4 | |||||||||||||||||||||
| W Zirngibl | 7 | 7 | W Zirngibl | 7 | 6 | ||||||||||||||||||||||
| D Carter | 2 | 3 | 6 | U Pinner | 5 | 1 | |||||||||||||||||||||
| 6 | U Pinner | 6 | 6 | 1 | M Orantes | 6 | 6 | ||||||||||||||||||||
| 3 | B Taróczy | 6 | 6 | J Hřebec | 4 | 2 | |||||||||||||||||||||
| K Eberhard | 2 | 4 | 3 | B Taróczy | 2 | 6 | 6 | ||||||||||||||||||||
| K Meiler | 4 | 5 |  I Molina | 6 | 0 | 7 | |||||||||||||||||||||
| I Molina | 6 | 7 | I Molina | 6 | 5 | 2 | |||||||||||||||||||||
| J Hřebec | 6 | 6 | J Hřebec | 1 | 7 | 6 | |||||||||||||||||||||
 J Andrew | 2 | 3 | J Hřebec | 6 | 6 | ||||||||||||||||||||||
 P Dominguez | 3 | 6 | 5 | 8 | Ž Franulović | 4 | 4 | ||||||||||||||||||||
| 8 | Ž Franulović | 6 | 3 | 7 | |||||||||||||||||||||||
| First Round | Second Round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | R Gehring | 7 | 6 | ||||||||||||||||||||||||
 R Moore | 6 | 1 | 7 | R Gehring | 6 | 4 | |||||||||||||||||||||
| J James | 6 | 1 | Q | A Gómez | 7 | 6 | |||||||||||||||||||||
| Q | A Gómez | 7 | 6 | Q | A Gómez | 4 | 7 | 6 | |||||||||||||||||||
| J Kodeš | 6 | 7 | J Kodeš | 6 | 6 | 4 | |||||||||||||||||||||
 J Soares | 3 | 5 | J Kodeš | 4 | 6 | 7 | |||||||||||||||||||||
| Q | S Birner | 2 | 4 | 4 | V Pecci | 6 | 4 | 6 | |||||||||||||||||||
| 4 | V Pecci | 6 | 6 | Q | A Gómez | 4 | 1 | ||||||||||||||||||||
| 5 | T Okker | 4 | 6 | 6 | 2 | W Fibak | 6 | 6 | |||||||||||||||||||
| Q | A Muñoz | 6 | 3 | 1 | 5 | T Okker | 6 | 5 | |||||||||||||||||||
| P Elter | 6 | 6 | 6 | P Elter | 7 | 7 | |||||||||||||||||||||
 K Johansson | 7 | 2 | 1 | P Elter | 2 | 3 | |||||||||||||||||||||
 R Fagel | 6 | 6 | 2 | W Fibak | 6 | 6 | |||||||||||||||||||||
| Q | C Roger-Vasselin | 2 | 1 | R Fagel | 4 | 6 | 3 | ||||||||||||||||||||
| J-L Haillet | 3 | 4 | 2 | W Fibak | 6 | 3 | 6 | ||||||||||||||||||||
| 2 | W Fibak | 6 | 6 | ||||||||||||||||||||||||
Jimmy Connors defeated Björn Borg in the final, 6–4, 6–2, 6–2 to win the Men's Singles tennis title at the 1978 US Open. The final was watched by a sell-out crowd of 19,537 spectators.
Three-time defending champion Björn Borg successfully defended his title, defeating Roscoe Tanner in the final, 6–7(4–7), 6–1, 3–6, 6–3, 6–4 to win the Gentlemen's Singles tennis title at the 1979 Wimbledon Championships.
Jimmy Connors defeated Björn Borg in the final, 6–4, 3–6, 7–6(11–9), 6–4 to win the Men's Singles tennis title at the 1976 US Open.
Manuel Orantes was the defending champion, but did not participate this year.
John Alexander was the defending champion but lost in the final 6–4, 6–4 against Eddie Dibbs.
Manuel Orantes won in the final 5–7, 6–2, 0–6, 7–6, 6–1 against Wojtek Fibak.
Wojtek Fibak and Jan Kodeš were the defending champions, but Fibak did not participate this year. Kodeš partnered Jiří Hřebec, losing in the semifinals.
Antonio Muñoz and Manuel Orantes were the defending champions, but did not participate this year.
Jimmy Connors was the defending champion, but lost in the quarterfinals this year.
Dick Stockton was the defending champion, but lost in the first round.
Peter Fleming and John McEnroe were the defending champions, but did not participate this year.
Jimmy Connors was the defending champion but lost in the final this year.
Rod Laver and Dennis Ralston were the defending champions, but Ralston did not participate this year. Laver partnered Ken Rosewall, losing in the first round.
Manuel Orantes won the title for the third time, defeating Jimmy Connors in the final.
Brian Gottfried and Raúl Ramírez were the defending champions, but they played in the Buckeye Classic this year. Patricio Cornejo and Jaime Fillol claimed the title following victory over Dick Crealy and Cliff Letcher in the final. Crealy and Letcher were denied their prize money because their late appearance had caused the final to be delayed.
Manuel Orantes was the defending champion but lost in the quarterfinals. Jimmy Connors won the title for the second time and $25,000 prize money by defeating Wojciech Fibak in the final.
Juan Gisbert and Manuel Orantes were the defending champions, but they fell in the first round. Brian Gottfried and Raúl Ramírez claimed the title and $7,000 first-prize money following victory over Fred McNair and Sherwood Stewart in the final.
Jimmy Connors and Ilie Năstase didn't defend their title, they played in North Conway instead. Juan Gisbert and Manuel Orantes claimed the title and $6,000 first-prize money following victory over Wojciech Fibak and Hans-Jürgen Pohmann in the final.
Brian Gottfried and Raúl Ramírez were the defending champions but lost in the semifinals to Gene Mayer and Hank Pfister.
Dick Crealy and Onny Parun were the defending champions but competed this year with different partners. Crealy teamed up with Niki Pilić, and lost in the first round to Wojtek Fibak and Balázs Taróczy. Parun teamed up with Željko Franulović, and lost in the second round to Iván Molina and Jairo Velasco.