Premier League

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Premier League (PL) is a method of scoring robots in the RoboRumble.

Original Premier League

The original PL scoring method, as proposed by PEZ, was:

  • Each robot either wins, loses, or ties against each of its enemies.
  • A win (above 50% average score) earns a bot 2 points.
  • A tie (exactly 50% average score) earns a bot 1 point.
  • A loss (below 50% average score) earns a bot 0 points.
  • Each bot's PL ranking is the sum of its points.

PL scoring was implemented in Darkcanuck's RoboRumble server and many previous servers. For example, DrussGT 2.0.5 had a PL score of 1616.

Alternate PL Format

Eventually, it was realized that:

  • Ties (exactly 50% score) didn't actually happen.
  • PL scores were plain numbers, which were not very interpretable.

The alternate PL scoring method was simply win–loss (rank). For instance, Diamond 1.8.2.2 had a PL score of 923-1 (2nd).

PWIN

Then it was realized that PL scores would increase as the number of competitors increased. This meant that current PL scores could not be compared with historical PL scores.

PL was replaced with Percentage Won (PWIN), which was simply the percentage of enemies a robot could win against. For instance, Gilgalad currently has a PWIN score of 99.48%.

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