KnowraATP TourLinked fromLinked fromThe 6 pages that link to ATP Tour, each with the reason it gives.All 6Related 4Narrower topic 2Open EraRelated: It grew from the need to coordinate professional men’s tournaments after the game opened.Professional tennisRelated: It stages most top-level men's tournaments and awards ranking points.TennisRelated: It organizes much of the elite men's competition beyond the Grand Slams.ATP rankingsRelated: Its tournaments supply most of the results used to calculate the rankings.