<page_title> Mei Yamaguchi </page_title> <section_title> Mixed martial arts record </section_title> <table> <cell> Win <col_header> Res. </col_header> </cell> <cell> Anna Saito <col_header> Opponent </col_header> </cell> <cell> Submission (rear-naked choke) <col_header> Method </col_header> </cell> <cell> Smackgirl-F 2007: The Next Cinderella Tournament 2007 First Stage <col_header> Event </col_header> </cell> <cell> March 11, 2007 <col_header> Date </col_header> </cell> <cell> The Next Cinderella Tournament 2007 Lightweight opening round <col_header> Notes </col_header> </cell> </table>
Yamaguchi started her professional career in MMA in the lightweight tournament of Smackgirl-F 2007: The Next Cinderella Tournament 2007 First Stage on March 11, 2007, where she defeated Anna Saito by submission due to a rear naked choke.