you cant run 90m of the 100m dash in record time, then give up at the end and convince people that if you had finished the race you'd hold the world record.
Djokovic end of season indoor run was so pathetic that it marred his year. While still an amazing year i can't call it the greatest season ever while he gives up at the finish line because he's content with what he's accomplished already. A real champion pushes to the finish. I can be sympathetic if he's injured but too bad so sad.