Jack Jackson
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Bob Carmichael | 0 | 1 | 1 | Apr 24, 1970 | H2H |
| Pancho Guzman | 0 | 1 | 1 | Apr 18, 1968 | — |
H2H data updated: 2026-09-04 00:00 UTC
Jack Jackson vs Pancho Guzman H2H: 0-1
Pancho Guzman holds a 1–0 lead over Jack Jackson in their ATP head-to-head. Across 1 main-draw meeting, Pancho Guzman leads 1–0 on clay. Most recently, Pancho Guzman won the 1968 Houston 2 round of 32 6-3 8-6.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
H2H Match Log
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Pancho Guzman | 6-3 8-6 | Jack Jackson | Match data | Apr 18, 1968* | R32 | Houston 2 | ATP 250 | Clay |
Estimated match date where the exact historical date is unavailable. Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category. Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.
Career Comparison
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 including documented historical predecessor categories | Finals | 500 including documented historical predecessor categories | 250 including documented historical predecessor categories | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jack Jackson | — | — | — | 1,500 | 0 | 2 | 0.0% | 0 | 0 | 0 | 0 | 0 | 0 |
| Pancho Guzman | — | — | — | 1,579 | — | — | — | 0 | 0 | 0 | 0 | 1 | 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.
| Jack Jackson | Pancho Guzman | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 1968 | 0–1 | 0.0% | — | 1,482 | 0 | 0 | — | — | — | — | — | — | — |
| 1970 | 0–1 | 0.0% | — | 1,475 | 0 | 0 | — | — | — | — | — | — | — |
Surface Results by Career Season
Rows are aligned in career order because complete birth data is unavailable. Results cover completed main-draw matches. Bold green marks the higher win percentage when both players have at least 5 matches on that surface at the aligned age.
| Jack Jackson | Pancho Guzman | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Carpet | Yr | Hard | Clay | Grass | Carpet | ||||||||||||||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | ||
| 1968 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 1968 | 0 | 4 | 4 | 0.0% | 4 | 4 | 8 | 50.0% | 0 | 2 | 2 | 0.0% | 0 | 2 | 2 | 0.0% |
| 1970 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 1969 | 0 | 2 | 2 | 0.0% | 9 | 7 | 16 | 56.3% | 2 | 5 | 7 | 28.6% | 3 | 2 | 5 | 60.0% |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1970 | 0 | 2 | 2 | 0.0% | 0 | 3 | 3 | 0.0% | 1 | 3 | 4 | 25.0% | — | — | — | — |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1971 | 1 | 2 | 3 | 33.3% | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — |
| Career | — | — | — | — | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | Career | 1 | 10 | 11 | 9.1% | 14 | 15 | 29 | 48.3% | 3 | 10 | 13 | 23.1% | 3 | 4 | 7 | 42.9% |
Advanced Statistics Comparison by Career Season
Rows are aligned in career order because complete birth data is unavailable. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. Bold green marks the stronger value when both underlying samples are sufficient. Lower is better for Schedule because a negative value means a tougher schedule. Career Schedule is normalized per 100 matches.
| Jack Jackson | Pancho Guzman | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule |
| 1968 | 1483 | 98.8 | — | — | — | — | — | — | — | 0.0% | -2.50 | — | — | — | +0.10 | 1968 | 1444 | 94.7 | — | — | — | — | -32 | +102 | — | 30.6% | -1.44 | 3–3 (50%) | — | — | -0.05 |
| 1970 | 1475 | 101.7 | — | — | — | — | — | — | — | 0.0% | -2.50 | — | — | — | -0.07 | 1969 | 1517 | 109.5 | — | — | — | — | -50 | +114 | -97 | 44.3% | -0.19 | 6–4 (60%) | — | — | +1.33 |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1970 | 1464 | 94.9 | — | — | — | — | — | — | — | 0.0% | -4.34 | — | — | — | -0.10 |
| — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1971 | 1496 | 108.4 | — | — | — | — | — | — | — | 50.0% | +0.10 | 1–1 | 0–1 | — | +0.01 |
| Career | 1500 | 100.2 | — | — | — | — | — | — | — | 0.0% | -2.50 | — | — | — | +1.50 | Career | 1580 | 103.9 | — | — | — | — | -42 | +110 | -97 | 36.7% | -0.91 | 10–8 (56%) | 0–1 | — | +2.29 |
Career Rivalries
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
Pancho Guzman
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Cliff Richey | 1 | 4 | 5 | Jun 18, 1970 | — |
| John Newcombe | 0 | 3 | 3 | Aug 15, 1971 | — |
| Luis Ayala | 0 | 2 | 2 | Mar 31, 1971 | — |
| Tom Gorman | 1 | 1 | 2 | May 3, 1970 | — |
| Arthur Ashe | 0 | 2 | 2 | Feb 17, 1970 | — |