Zack Viberg

Sex
Male
Weight class
-87 kg

Ranking

Personal records

Muscle-up
30 kg
Pull-up
100.5 kg
Dips
132.5 kg
Squat
210 kg
Czechia Open • 02-05-2026

Performance over time

Best 467.5 kg on May 2, 2026 at Czechia Open

Date Jan 2025 Jan 2026 kg 350 400 450 500

Strength profile

Strength profile

Men -87kg · All time

Compares each best lift with other athletes’ bests. Percentile is the percentage of peers below that result, counting ties as half.

Peer counts vary by lift.

Muscle-up Pull-up Squat Dips 20 40 60 80 100
Muscle-up
85.1 percentile
Pull-up
97.7 percentile
Squat
65 percentile
Dips
84 percentile

Competition history

Page 1 of 1 · 6 competitions
Rank Competition Total RIS

What is RIS?

The Relative Index for Streetlifting (RIS) provides the definitive method for comparing Streetlifting athletes across weight classes within the same gender. Developed specifically for All-4 competitions, this scoring system normalizes strength performance using comprehensive data from elite competitors. Updated annually to reflect evolving standards, RIS offers a fair benchmark for athletes, coaches, and competition organizers worldwide.

warisradji.com

We recalculate RIS with the current formula, so scores may differ from published results.

When bodyweight is missing, we estimate it from the published RIS where possible. Otherwise, we keep the reported score, marked R.

Learn more on the ris page of OpenStreetlifting

Muscle Up 1 2 3 BestPull Up 1 2 3 BestDips 1 2 3 BestSquat 1 2 3 Best Date Class
1Swedish Streetlifting Nationals450- 30 95 125 20013-06-2026Men -87kg
2Czechia Open467.589.802027.530 30909597.5 97.5130140140 130190205210 21002-05-2026Men -87kg
2Streetlifting Nordic437.5- 27.5 95 130 18515-11-2025Men -87kg
1Swedish Streetlifting Nationals43384.01 20 100.5 132.5 18016-08-2025Men -87kg
DQStreetlifting Nordic-- N/A 95 110 15530-11-2024Men -87kg
2Swedish Streetlifting Nationals388.7575.83202530 30859093.75 93.75105110115 115140150155 15015-06-2024Men -85kg
Page 1 of 1 · 6 competitions