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The table reports the finishing positions of the players in events that have been held in the eight weeks prior to the tournament; these must be events sanctioned by a professional tour. In the right hand side of the table is the average actual score and the average adjusted score. For the average score, this is simply the mean value of the player's scores in the past eight weeks. For the average adjusted score, this weights the player's score against the average score on any particular day and against the quality of the field on that day. The Sagarin performance index is used to weight each event by providing an index of field quality. That is, the field quality weighting for any particular round is a weighted average of every competing player's Sagarin performance index [see here for details of the Sagarin performance index]. So for a round of 70 on a day when the average score is 71, this is one shot better than the average score, so if the field index is 72 this yields an 'adjusted score' of 71. For a round of 70 when the average score for that day is 68.50, this is 1.50 shots worse than the average score. In this case, the 'adjusted score' will be 73.50. This is a means of factoring out variations in the weather, course and so on across the different scores to give a more balanced view of 'real' scoring. The average adjusted scores is a weighted average with weights increasing as the scores are more recent. The rank refers to the adjusted scores series. |