What energy system is used when playing tennis?

There are three energy systems we use when we exercise.

PC/ alactic system- maximal intensity for less than 10secs-100m

lactic acid system- maximal intensity for >10secs<4mins- 400m

aerobic system- sub maximal intensity for >4mins- marathon

i am confused to the breakdown of each during a Netball match the lactic system is used for running back and forth alot without stopping The Aerobic system may be used by a C player. These players have to run continuously and are ultra fit. But the main system used is the lactic acid system. Most players would be using the lactic acid system, along with the Alactic system. This would allow players to use explosive amounts of energy for short bursts, such as a short lead, or rebound. The lactic acid system would be used for double leads, blocking players, etc.