H2H data updated: 2026-07-19 14:15 UTC
John Hayes vs Sammy Giammalva Jr H2H: 0-1
Sammy Giammalva Jr holds a 1–0 lead over John Hayes in their ATP head-to-head. Across 1 main-draw meeting, Sammy Giammalva Jr leads 1–0 on hard courts. Most recently, Sammy Giammalva Jr won the 1981 Napa quarterfinal 6-2 6-4.
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USA
Age 71
Right-Handed
193 cm / 6'4"
H2H
0
–
1
1 main draw meetings
Age 63
Right-Handed
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Mar 28, 1981* | Napa | ATP 250 | QF | Hard | Sammy Giammalva Jr | 6-2 6-4 | John Hayes | 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 Hayes | #637 | #92 | 0 | 1,588 | 15 | 28 | 34.9% | 0 | 0 | 0 | 0 | 0 | 0 |
| Sammy Giammalva Jr | — | — | — | 1,802 | — | — | — | 0 | 0 | 0 | 0 | 2 | 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 Hayes | Sammy Giammalva Jr | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 23 | 1978 | 0–1 | 0.0% | #211 | 1,499 | 0 | 0 | — | — | — | — | — | — | — |
| 24 | 1979 | 1–1 | 50.0% | #252 | 1,506 | 0 | 0 | — | — | — | — | — | — | — |
| 25 | 1980 | 6–7 | 46.2% | #97 | 1,581 | 0 | 0 | — | — | — | — | — | — | — |
| 26 | 1981 | 6–14 | 30.0% | #99 | 1,517 | 0 | 0 | — | — | — | — | — | — | — |
| 27 | 1982 | 2–4 | 33.3% | #248 | 1,517 | 0 | 0 | — | — | — | — | — | — | — |
| 29 | 1984 | 0–1 | 0.0% | #463 | 1,494 | 0 | 0 | — | — | — | — | — | — | — |