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Jerami Antonio Serrano Rivera vs Zhang Guozheng
Jerami Antonio Serrano Rivera and Zhang Guozheng, compared on every result on this site. Jerami Antonio Serrano Rivera's best total is 252 kg (men's 69 kg, 2009); Zhang Guozheng's is 347.5 kg (men's 69 kg, 2002). On the Sinclair scale, which allows for bodyweight, Zhang Guozheng is ahead by 136.3 points. They never met in the same class.
Jerami Antonio Serrano Rivera and Zhang Guozheng side by side
Career figures from every result on this site. Where one figure is better, it is in bold. The figures are explained under the table.
| Figure | Jerami Antonio Serrano Rivera |  Zhang Guozheng |
|---|---|---|
| Nation | Not listed | China |
| Born | Not listed | 1974 |
| Competitions | 2, 2008 to 2009 | 8, 1999 to 2007 |
| Olympic medals | None | 1 gold |
| World Championships medals | None | 3 gold |
| Best snatch | 112 kg | 160 kg |
| Best clean and jerk | 140 kg | 192.5 kg |
| Best total | 252 kg (men's 69 kg, 2009) | 347.5 kg (men's 69 kg, 2002) |
| Best Sinclair score | 357.3 | 493.6 |
| Best total, place in its class | 747th of 1,135 in the men's 69 kg | 7th of 1,135 in the men's 69 kg |
| Snatch attempts made | Too few recorded | 67% (14 of 21) |
| Clean and jerk attempts made | Too few recorded | 67% (14 of 21) |
| Snatch as a share of clean and jerk | 80% | 81% |
| 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 men lifting in national federation meets sit between 71% and 86%.
- 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.
Jerami Antonio Serrano Rivera vs Zhang Guozheng head to head
Jerami Antonio Serrano Rivera and Zhang Guozheng never lifted in the same class at the same competition. The results here run from 2008 to 2009 for Jerami Antonio Serrano Rivera and 1999 to 2007 for Zhang Guozheng, so the side by side figures and the chart are the comparison.
Jerami Antonio Serrano Rivera and Zhang Guozheng, competition by competition
The Sinclair score at each competition: the total scaled for bodyweight, so lifters from different classes sit on one scale. Competitions that ended without a total or a bodyweight have no point.
More comparisons
Lifters whose best totals came in nearby classes, from any year.