Daniela posted a video of him in Gaël's forum the other day:
Originally Posted by Danielafrenchfan
do you remember few years ago i posted a video "une journée avec gael monfils" from lequipe tv ..
and in this video, there was GUILLAUME RUFIN, who just won his first match today at roland garros !
he was sparring partner of gael
edit > http://www.youtube.com/watch?v=s8DIS7cS8bo
There also was a video about him on the FFT website some time ago, that's how I became aware of him: