Hello,
I'm going to add a Run Acceleration Boost helper in the next update. It'll be mostly like using the current MtRun cheat. After a quick test, I think I'm going to do 4 steps, from 0 to 30% ( = 1.3 for the Acceleration in the Tennis.ini, and keep 1 for the MaxSpeed).
If you use MtRun to get a closer feeling to TE2013 or just to help you reach more balls, what values did you set for Acceleration & MaxSpeed ?