Originally Posted by UCSF2012
You're whoring yourself out for tennis. Could be worse. Give him his money's worth, and make sure he comes back for more.
Sounds like somebody who knows the business well...
If I were the OP I would go 100%, but would practice some some lower percentage strokes I normally don't do in "important" matches, or hit where I am usually not comfortable. If I am losing, I try to come back with the game I am best at.
And matches like this are great for practising your serve placements.