NUMBER@1 was the fourth time that PERSON@1 ended the year ranked No. NUMBER@2 , joining PERSON@2 , PERSON@3 and PERSON@4 as the only female players to end a year ranked first at least four times .

She is one of only four women -LRB- the others being PERSON@2 , PERSON@3 , and PERSON@4 -RRB- since NUMBER@3 who has been the year-end World No. NUMBER@2 at least four times .
