# John Marks (tennis)

John M. P. Marks (born 9 December 1952) is a former professional tennis player from Australia.
Marks won the ILTF Western Australian Championships on grass in 1978 at Perth defeating Mark Edmondson, Chris Kachel, and Bob Carmichael in a marathon five set final. Marks would finish as runner-up in the same event in 1979 losing the final to Edmondson.
Marks is best remembered for finishing runner-up in singles at the 1978 Australian Open, defeating Arthur Ashe in the semifinals. As a result of this slam final appearance, he achieved his career-high singles ranking of world No. 44, after entering the tournament ranked No. 177.
Marks never won a Grand Slam singles title during his career, but won 7 doubles titles and reached the semifinals of the men's doubles at the 1978 US Open. As a junior, Marks won the Australian Open boys' doubles in 1971, partnering Michael Phillips.

## Career finals
### Singles (2 runners-up )

| Result | W/L | Year | Tournament | Surface | Opponent | Score |
| Loss | 0–1 | 1975 | Sydney Outdoor, Australia | Grass | Ross Case | 2–6, 1–6 |
| Loss | 0–2 | 1978 | Australian Open, Melbourne | Grass | Guillermo Vilas | 4–6, 4–6, 6–3, 3–6 |

### Doubles (7 titles, 7 runner-ups)

| Result | W/L | Year | Tournament | Surface | Partner | Opponents | Score |
| Win | 1–0 | 1975 | Sydney Outdoor, Australia | Grass | Mark Edmondson | Chris Kachel Peter McNamara | 6–1, 6–1 |
| Loss | 1–1 | 1976 | Palma, Spain | Clay | Mark Edmondson | John Andrews Colin Dibley | 6–2, 3–6, 2–6 |
| Loss | 1–2 | 1976 | Sydney Outdoor, Australia | Grass | Mark Edmondson | Syd Ball Kim Warwick | 3–6, 4–6 |
| Win | 2–2 | 1977 | Cairo, Egypt | Clay | John Bartlett | Pat DuPré Chris Lewis | 7–5, 6–1, 6–3 |
| Win | 3–2 | 1977 | Båstad, Sweden | Clay | Mark Edmondson | Jean-Louis Haillet François Jauffret | 6–4, 6–0 |
| Win | 4–2 | 1977 | Manila, Philippines | Hard | Chris Kachel | Mike Cahill Terry Moor | 4–6, 6–0, 7–6 |
| Loss | 4–3 | 1978 | Florence, Italy | Clay | Mark Edmondson | Corrado Barazzutti Adriano Panatta | 3–6, 7–6, 3–6 |
| Loss | 4–4 | 1978 | Sydney Indoor, Australia | Hard (i) | Mark Edmondson | John Newcombe Tony Roche | 4–6, 3–6 |
| Win | 5–4 | 1978 | Hong Kong | Hard | Mark Edmondson | Hank Pfister Brad Rowe | 5–7, 7–6, 6–1 |
| Loss | 5–5 | 1978 | Taipei, Taiwan | Carpet (i) | Mark Edmondson | Sherwood Stewart Butch Walts | 2–6, 7–6, 6–7 |
| Loss | 5–6 | 1979 | Hamburg, Germany | Clay | Mark Edmondson | Jan Kodeš Tomáš Šmíd | 3–6, 1–6, 6–7 |
| Win | 6–6 | 1979 | Gstaad, Switzerland | Clay | Mark Edmondson | Ion Țiriac Guillermo Vilas | 2–6, 6–1, 6–4 |
| Loss | 6–7 | 1979 | Båstad, Sweden | Clay | Mark Edmondson | Heinz Günthardt Bob Hewitt | 2–6, 2–6 |
| Win | 7–7 | 1979 | Taipei, Taiwan | Carpet (i) | Mark Edmondson | Pat DuPré Robert Lutz | 6–1, 3–6, 6–4 |

## Grand Slam tournament performance timeline

Key :
| W | F | SF | QF | #R | RR | Q# | DNQ | A | NH |

### Singles

| Tournament | 1976 | 1977 | 1977 | 1978 | 1979 | 1980 | SR |
| Australian Open | 1R | 1R | 1R | F | 1R | Q1 | 0 / 5 |
| French Open | A | A | A | 2R | 1R | A | 0 / 2 |
| Wimbledon | 1R | 1R | 1R | 2R | 1R | Q1 | 0 / 4 |
| US Open | A | 1R | 1R | A | 1R | A | 0 / 2 |
| Strike rate | 0 / 2 | 0 / 4 | 0 / 4 | 0 / 3 | 0 / 4 | 0 / 0 | 0 / 13 |
Note: The Australian Open was held twice in 1977, in January and December.