"Safin later explained that passed the parliamentary mandate in connection with its incorporation into the International Tennis Hall of Fame and has appeared in connection with the prospects. At the same time, Safin took Duma Speaker Vyacheslav Volodin offer and became his adviser to volunteer for sport."
....or maybe it has more to do with the fact that he will now have to pay cash for hid days off.....
"Earlier retirement from the State Duma announced a famous tennis player, member of United Russia Marat Safin: he could not combine social activities with work in the lower house."
apologies - can't seem to get the hang of posting links.... :-(