WTA Tour
The WTA Tour is a worldwide top-tier tennis tour for women organized by the Women's Tennis Association. The second-tier tour is the WTA 125K series, and third-tier is the ITF Women's Circuit. The men's equivalent is the ATP Tour. WTA Tour tournaments. Structure (2009–2020). The WTA Tour comprised from 2009 to the 2020 reorganization: WTA rankings. WTA publishes weekly rankings of professional players.