So if Nishikori beats Raonic and Murray loses to Tsonga, he's out of the top 10?
Yes, but if he beats Joe he'll stay No 9. Then he has no points to defend for the rest of the year, so should start to rise up the chart again.
It would be much better if he won the USO for a second time then who cares about the rankings, 3 time GS winner! Sounds great.