We're at the end of our main league season here, and a number of our roster players have injuries, minor to major. I played partners with someone today on her first match returning after knee surgery. I felt it every time she stopped short, sliding hard into the ball, or jumped high to make an overhead (these things clearly hurt). I insisted she stop after two sets, regardless that we split. She is a fantastic player, and she played so great that I wanted her to be encouraged, but not over-do! Meanwhile... when someone is coming off an injury, or maybe is just getting a bit older and not able to move too well... do you have pity on them, giving them easy (or easier) shots, so they don't feel too lame on court? It goes against the "killer instinct" but afterwards, feels better - even if you lose because you gave them too many easy balls.