what surface was used before carpet?
hard (i)
col : outcome | no. | date | championship | surface | opponent | score row 1 : runner-up | 1. | 1973 | baltimore, u.s. | hard (i) | jimmy connors | 4–6, 5–7 row 2 : winner | 1. | 1974 | baltimore, u.s. | carpet | clark graebner | 6–2, 6–1 row 3 : runner-up | 2. | 1974 | birmingham, u.s. | carpet | jimmy connors | 5–7, 3–6 row 4 : winner | 2. | 1974 | paramus, u.s. | indoor | jürgen fassbender | 6–1, 6–3 row 5 : winner | 3. | 1974 | jackson, u.s. | carpet | karl meiler | 7–6, 7–5 row 6 : runner-up | 3. | 1975 | maui, u.s. | hard | jimmy connors | 1–6, 0–6 row 7 : runner-up | 4. | 1975 | hong kong | hard | tom gorman | 3–6, 1–6, 1–6 row 8 : winner | 4. | 1977 | little rock, u.s. | carpet | haroon rahim | 6–2, 6–4 row 9 : runner-up | 5. | 1977 | san jose, u.s. | hard | jiří hřebec | 6–3, 4–6, 5–7 row 10 : winner | 5. | 1977 | hampton, u.s. | carpet | stan smith | 4–6, 6–3, 6–2, 1–6, 6–3 row 11 : winner | 6. | 1977 | stockholm, sweden | hard (i) | raymond moore | 6–2, 6–4 row 12 : winner | 7. | 1978 | st. louis wct, u.s. | carpet | eddie dibbs | 7–6, 6–4 row 13 : runner-up | 6. | 1980 | surbiton, england | grass | brian gottfried | 3–6, 3–6 row 14 : runner-up | 7. | 1981 | los angeles, u.s. | hard | john mcenroe | 7–6, 3–6, 3–6 row 15 : runner-up | 8. | 1981 | cologne, germany | hard (i) | ivan lendl | 3–6, 3–6 row 16 : runner-up | 9. | 1981 | stockholm, sweden | hard (i) | gene mayer | 4–6, 2–6 row 17 : winner | 8. | 1981 | bologna, italy | carpet | ilie năstase | 7–5, 6–3 row 18 : runner-up | 10. | 1982 | stuttgart outdoor, germany | clay | ramesh krishnan | 7–5, 3–6, 3–6, 6–7 row 19 : winner | 9. | 1982 | cleveland, u.s. | hard | robert van't hof | 7–5, 6–3 row 20 : winner | 10. | 1983 | gstaad, switzerland | clay | tomáš šmíd | 6–0, 6–3, 6–2
what surface was used before carpet?
Outcome No. Date Championship Surface Opponent Score
Runner-up 1. 1973 Baltimore, U.S. Hard (i) Jimmy Connors 4–6, 5–7
Winner 1. 1974 Baltimore, U.S. Carpet Clark Graebner 6–2, 6–1
Runner-up 2. 1974 Birmingham, U.S. Carpet Jimmy Connors 5–7, 3–6
Winner 2. 1974 Paramus, U.S. Indoor Jürgen Fassbender 6–1, 6–3
Winner 3. 1974 Jackson, U.S. Carpet Karl Meiler 7–6, 7–5
Runner-up 3. 1975 Maui, U.S. Hard Jimmy Connors 1–6, 0–6
Runner-up 4. 1975 Hong Kong Hard Tom Gorman 3–6, 1–6, 1–6
Winner 4. 1977 Little Rock, U.S. Carpet Haroon Rahim 6–2, 6–4
Runner-up 5. 1977 San Jose, U.S. Hard Jiří Hřebec 6–3, 4–6, 5–7
Winner 5. 1977 Hampton, U.S. Carpet Stan Smith 4–6, 6–3, 6–2, 1–6, 6–3
Winner 6. 1977 Stockholm, Sweden Hard (i) Raymond Moore 6–2, 6–4
Winner 7. 1978 St. Louis WCT, U.S. Carpet Eddie Dibbs 7–6, 6–4
Runner-up 6. 1980 Surbiton, England Grass Brian Gottfried 3–6, 3–6
Runner-up 7. 1981 Los Angeles, U.S. Hard John McEnroe 7–6, 3–6, 3–6
Runner-up 8. 1981 Cologne, Germany Hard (i) Ivan Lendl 3–6, 3–6
Runner-up 9. 1981 Stockholm, Sweden Hard (i) Gene Mayer 4–6, 2–6
Winner 8. 1981 Bologna, Italy Carpet Ilie Năstase 7–5, 6–3
Runner-up 10. 1982 Stuttgart Outdoor, Germany Clay Ramesh Krishnan 7–5, 3–6, 3–6, 6–7
Winner 9. 1982 Cleveland, U.S. Hard Robert Van't Hof 7–5, 6–3
Winner 10. 1983 Gstaad, Switzerland Clay Tomáš Šmíd 6–0, 6–3, 6–2
Hard (i)