This is from a pdf for tennis strategy downloaded from internet:
The top ten ways to lose a match:
1. attempting to hit winners when you are behind the baseline
2. trying to put away overhead behind the service line
3. swinging on high floating volleys
4. hitting your 1st serve with same pace for the entire match
5. hitting groundstroke into the net
6. changing a game plan that is working
7. having only one game plan: baseline, serve-volley, puncher, etc
8. drop shot behind the baseline
9. insisting on how you like not what will win
10. using a game plan that you dont own