Chinese amateur Jose Maria Olazabal plays back 2011 of Guan with Tiger Woods . '' Guan told the PGA Tour 's official website . `` I 'm not going to push myself too hard . Guan to become the youngest player in Masters history when play begins on Thursday . 2011 Chinese Open champion Darren Clarke forced to withdraw due to a hamstring injury . Darren Clarke apologizes to fan after hitting him in the head with a wayward shot .
Chinese amateur Jose Maria Olazabal plays back 2011 of Guan with Tiger Woods . Guan to become the youngest player in Masters history when play begins on Thursday . 2011 Chinese Open champion Darren Clarke forced to withdraw due to a hamstring injury . Darren Clarke apologizes to fan after hitting him in the head with a wayward shot .