it would have been interesting if serena had played all year. IMO it is very unlikely that serena would have lost to anyone besides venus during the summer on hard-courts, so she would have 3 slams and thus probably won the award.
Well, she didn't play and Justine did. Everyone needs to stop dwarfing her achievements.
i'm not trying to 'dwarf' her achievements, i just think it would have been interesting if the rivalry was actually played out into a battle for the player of year. justine is definitely the player of the year based on results