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Cai Jun vs Udomporn Polsak
Cai Jun and Udomporn Polsak, compared on the results on record here: medals at the Olympic Games and World Championships before 1998, and every result since. Cai Jun's best total is 165 kg (women's 48 kg, 1990); Udomporn Polsak's is 222.5 kg (women's 53 kg, 2003). No meeting in the same class is on record; before 1998 only medals at the Olympic Games and World Championships are.
Cai Jun and Udomporn Polsak side by side
Figures from the results on record here: medals at the Olympic Games and World Championships before 1998, and every result since. Where one figure is better, it is in bold. Their best totals came in different classes, so kilograms alone do not say who was stronger. The figures are explained under the table.
| Figure |  Cai Jun |
 Udomporn Polsak |
|---|---|---|
| Nation | China | Thailand |
| Born | 1971 | 1981 |
| Competitions on record | 2, 1987 to 1990 | 8, 1998 to 2004 |
| Olympic medals | None | 1 gold |
| World Championships medals | 2 gold | 1 gold, 1 bronze |
| Best snatch | - | 100 kg |
| Best clean and jerk | - | 125 kg |
| Best total | 165 kg (women's 48 kg, 1990) | 222.5 kg (women's 53 kg, 2003) |
| Best Sinclair score | No bodyweight on record before 1998 | 325.1 |
| Best total, place in its class | Not ranked: the class lists before 1998 are not on record here | 10th of 761 in the women's 53 kg |
| Snatch attempts made | Too few recorded | 57% (12 of 21) |
| Clean and jerk attempts made | Too few recorded | 62% (13 of 21) |
| Snatch as a share of clean and jerk | - | 82% |
| World records held now | None | None |
How to read these figures
- Sinclair score. The total scaled for bodyweight with the IWF's 2025 to 2028 coefficients, so lifters from different classes sit on one scale. Women and men have separate formulas.
- Place in its class. Where the best total stands among every lifter with a total in that class on this site, on the IWF class list in force at the time.
- Attempts made. The share of all snatch or clean and jerk attempts the lifter made. At senior World Championships and Olympic Games since 1998, lifters make 58% of snatches and 56% of clean and jerks.
- Snatch as a share of clean and jerk. The snatch divided by the clean and jerk at the best total. It describes the shape of a lifter, not strength, so it is not in bold; eight in ten women lifting in national federation meets sit between 70% and 85%.
- World records held now. Records on the IWF class list in force since 1 August 2026. A record set in a class that list retired does not carry over, so a past record holder can show none.
Cai Jun vs Udomporn Polsak head to head
No competition on record has Cai Jun and Udomporn Polsak in the same class; before 1998 only medals at the Olympic Games and World Championships are on record. The results here run from 1987 to 1990 for Cai Jun and 1998 to 2004 for Udomporn Polsak, so the side by side figures and the chart are the comparison.
Cai Jun and Udomporn Polsak, competition by competition
The total at each competition, in kilograms. One of the two has totals with no recorded bodyweight, so the chart shows totals rather than Sinclair scores. Competitions that ended without a total have no point.
More comparisons
Lifters whose best totals came in nearby classes, from any year.