

Introduction
Jeff Borowiak (born September 25, 1949) is a former professional tennis player from the United States, who won five singles and three doubles titles during his professional career, reaching a career-high ATP singles ranking of World No. 20 in August 1977.
Personal
Borowiak is also an accomplished musician, mastering the flute and the piano. He was also indirectly involved in the formation of the group Metallica when he invested in his friend and Danish fellow player Torben Ulrich's son band Lars Rocket, which later became Metallica.
Tennis career
Borowiak played number one singles on one of the greatest collegiate tennis team of all time for the UCLA Bruins. Haroon Rahim played number two singles, Jimmy Connors played at number three. Borowiak and Connors were NCAA champions, while Rahim remains the youngest player ever to represent his country in the Davis Cup competition.
Borowiak was ATP Comeback Player of the Year in 1981.
Borowiak was inducted into the Intercollegiate Tennis Association (ITA) Hall of Fame.
Career finals
Singles: 11 (5 titles – 6 runners-up)
| Outcome | No. | Date | Championship | Surface | Opponent | Score |
|---|---|---|---|---|---|---|
| Runner-up | 1. | October 17, 1971 | Cologne WCT, Germany | Carpet | 3–6, 7–6, 3–6, 1–6 | |
| Runner-up | 2. | July 10, 1972 | Bretton Woods, USA | Hard | 1–6, 0–6 | |
| Runner-up | 3. | April 7, 1974 | New Orleans WCT, USA | Hard | 4–6, 2–6 | |
| Winner | 1. | April 15, 1973 | Charlotte WCT, USA | Clay | 6–4, 5–7, 7–6(7–5) | |
| Winner | 2. | November 16, 1974 | Oslo, Norway | Indoor | 6–3, 6–2 | |
| Runner-up | 4. | January 14, 1976 | Atlanta WCT, USA | Carpet (i) | 2–6, 4–6 | |
| Winner | 3. | February 2, 1977 | Dayton, USA | Carpet (i) | 6–3, 6–3 | |
| Winner | 4. | July 3, 1977 | Gstaad, Switzerland | Clay | 2–6, 6–1, 6–3 | |
| Winner | 5. | August 16, 1977 | Toronto, Canada | Clay | 6–0, 6–1 | |
| Runner-up | 5. | March 9, 1981 | Tampa, USA | Hard | 6–4, 4–6, 3–6 | |
| Runner-up | 6. | November 23, 1981 | Johannesburg, South Africa | Hard | 4–6, 6–7, 1–6 |
Doubles: 9 (3 titles – 6 runners-up)
| Outcome | No. | Date | Tournament | Surface | Partner | Opponents | Score |
|---|---|---|---|---|---|---|---|
| Winner | 1. | October 7, 1973 | Osaka, Japan. | 6–4, 7–6 | |||
| Winner | 2. | February 18, 1974 | Hempstead WCT, USA | Hard | 6–7, 6–4, 6–4 | ||
| Winner | 3. | August 5, 1974 | Bretton Woods, USA | Clay | 6–3, 6–2 | ||
| Runner-up | 1. | November 16, 1973 | Oslo, Norway | Indoor | 3–6, 2–6 | ||
| Runner-up | 2. | October 5, 1975 | Maui, USA | Hard | 6–3, 6–7, 3–6 | ||
| Runner-up | 3. | March 30, 1976 | Caracas, Venezuela | Clay | 5–7, 4–6 | ||
| Runner-up | 4. | February 2, 1977 | Dayton, USA | Carpet (i) | 4–6, 6–7 | ||
| Runner-up | 5. | October 31, 1977 | Paris, France | Hard | 2–6, 0–6 | ||
| Runner-up | 6. | August 7, 1978 | Indianapolis, USA | Clay | 3–6, 1–6 |