<page_title> List of world number one snooker players </page_title> <section_title> Periods </section_title> <table> <cell> Ronnie O'Sullivan (4) <col_header> Player </col_header> </cell> <cell> 25 March 2019 <col_header> From </col_header> </cell> </table>
In March 2019, O'Sullivan returned to the world number one ranking.