Johnson Power Rankings
The world authority on 200+ mile ultramarathon running — weekly, data-driven, course-difficulty-adjusted.

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Chuan-Sin (Jason) Tan

Men · MAS · provisional rating

Also seen as: Tan, Chuan-Sin (Jason)

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen1104572• new
OverallMen975055• new
Multi-day / TimedMen36387• new

Why this rank

The Overall rating is the time-decayed mean of this athlete’s best 2 in-window performance scores (highlighted below). Each score = base × difficulty × field-strength × quality.

Career results (200+ mile tier)

(race) · · ?mi counts toward rating
place 2 · 1d 17:49:47 · difficulty ? · field ? · quality 0.97
236
(race) · · ?mi
place 7 · 1d 10:14:58 · difficulty ? · field ? · quality 0.68
163
(race) · · ?mi counts toward rating
place 3 · · difficulty ? · field ? · quality 0.27
21