yes, it should be possible.
In the "Tennis.ini" file (or the .ini of your custom Profile in the "Profiles" subfolder), look these lines under [MtRun] :
Acceleration = 1.75
MaxSpeed = 2.0
AiAcceleration = 1.0
AiMaxSpeed = 1.0
The 1st 2 lines control your player speed when the "mtrun" cheat code is enable, and the 2 last control the CPU speed.
To have Mtrun always enabled, add this line, under [Game] (or change it if it's already there) :
FastRun = 1
== Mana Games ==
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