Quads Rating Estimator

This calculates your estimated post-event USCF rating for a 4-player round-robin event, given the all players' pre-event ratings and everyone's scores. Unlike the Rating Estimator, this only works for 4-player round-robin events but is perfectly accurate.

Player 1 Rating:
Player 1 Score:

Player 2 Rating:
Player 2 Score:

Player 3 Rating:
Player 3 Score:

Player 4 Rating:
Player 4 Score:

Player 1 Performance:
Player 1 Expectancy:

Player 2 Performance:
Player 2 Expectancy:

Player 3 Performance:
Player 3 Expectancy:

Player 4 Performance:
Player 4 Expectancy:

Player 1 Post-event Rating:

Player 2 Post-event Rating:

Player 3 Post-event Rating:

Player 4 Post-event Rating:

This estimator makes some assumptions and if they all hold, it's dead accurate: