<page_title> Fastest recorded tennis serves </page_title> <section_title> Men </section_title> <table> <cell> United States John Isner <col_header> Player </col_header> </cell> <cell> 253 km/h (157.2 mph) <col_header> Speed </col_header> </cell> </table>
John Isner holds the ATP's record for the fastest serve at 253 km/h (157.2 mph).