H2H data updated: 2026-07-18 02:15 UTC
John Alexander vs Brad Guan H2H: 1-0
John Alexander holds a 1–0 lead over Brad Guan in their ATP head-to-head. Across 1 main-draw meeting, John Alexander leads 1–0 on grass. Most recently, John Alexander won the 1979 Adelaide fourth round 6-3 6-4.
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AUS
Age 75
Right-Handed
190 cm / 6'3"
H2H
1
–
0
1 main draw meetings
AUS
Age 68
Right-Handed
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Dec 14, 1979* | Adelaide | ATP 250 | R16 | Grass | John Alexander | 6-3 6-4 | Brad Guan | Match data |
* Estimated match date where the exact historical date is unavailable.
Career Comparison
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 | Finals | 500 | 250 | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| John Alexander | #860 | #8 | 0 | 2,067 | 579 | 422 | 57.8% | 0 | 0 | 0 | 0 | 9 | 9 |
| Brad Guan | #183 | #183 | 0 | 1,516 | 8 | 18 | 30.8% | 0 | 0 | 0 | 0 | 0 | 0 |
Career Progression by Age
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Age | John Alexander | Brad Guan | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 16 | 1968 | 27–14 | 65.9% | — | 1,647 | 0 | 0 | — | — | — | — | — | — | — |
| 17 | 1969 | 29–21 | 58.0% | — | 1,641 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 1970 | 24–14 | 63.2% | — | 1,819 | 0 | 1 | — | — | — | — | — | — | — |
| 19 | 1971 | 44–36 | 55.0% | — | 1,815 | 0 | 1 | 1978 | 0–1 | 0.0% | #555 | 1,491 | 0 | 0 |
| 20 | 1972 | 36–32 | 52.9% | — | 1,856 | 0 | 1 | 1979 | 1–1 | 50.0% | #368 | 1,506 | 0 | 0 |
| 21 | 1973 | 46–30 | 60.5% | #29 | 1,915 | 0 | 1 | 1980 | 0–2 | 0.0% | #185 | 1,482 | 0 | 0 |
| 22 | 1974 | 38–24 | 61.3% | #26 | 1,839 | 0 | 1 | 1981 | 3–8 | 27.3% | #185 | 1,477 | 0 | 0 |
| 23 | 1975 | 67–24 | 73.6% | #8 | 1,957 | 0 | 3 | 1982 | 4–6 | 40.0% | #223 | 1,510 | 0 | 0 |
| 24 | 1976 | 19–21 | 47.5% | #47 | 1,851 | 0 | 3 | — | — | — | — | — | — | — |
| 25 | 1977 | 48–33 | 59.3% | #18 | 1,875 | 0 | 4 | — | — | — | — | — | — | — |
| 26 | 1978 | 50–31 | 61.7% | #22 | 1,810 | 0 | 4 | — | — | — | — | — | — | — |
| 27 | 1979 | 43–28 | 60.6% | #20 | 1,815 | 0 | 6 | — | — | — | — | — | — | — |
| 28 | 1980 | 11–20 | 35.5% | #100 | 1,702 | 0 | 6 | — | — | — | — | — | — | — |
| 29 | 1981 | 23–21 | 52.3% | #75 | 1,746 | 0 | 6 | — | — | — | — | — | — | — |
| 30 | 1982 | 38–21 | 64.4% | #31 | 1,791 | 0 | 8 | — | — | — | — | — | — | — |
| 31 | 1983 | 24–25 | 49.0% | #77 | 1,656 | 0 | 9 | — | — | — | — | — | — | — |
| 32 | 1984 | 12–21 | 36.4% | #142 | 1,564 | 0 | 9 | — | — | — | — | — | — | — |
| 33 | 1985 | 0–6 | 0.0% | #405 | 1,491 | 0 | 9 | — | — | — | — | — | — | — |