CORSI

The level A can be given to the following: 

- coaches of ATP/WTA Top 100 players who worked at this level for at least 2 consecutive years
- former ATP/WTA Top 100 singles players
- former ATP/WTA Top 50 doubles players
- coaches who successfully completed the GPTCA Level A course

The level A* can be given to the following: 

- coaches of Grand Slam winners or runners-up in singles

- coaches who reached at least Grand Slam finals as tennis players in singles

- all Grand Slam champions or runners-up 

- all former Top 10 players 

- all GPTCA National Presidents 

The level B is suitable for coaches working with the ITF Transition Tour and ATP Challenger Tour-level players.

The level B can be given to the following:

- coaches of ATP/WTA Top 500 players who worked at this level for at least 2 consecutive years
- coaches of ITF Top 20 juniors who worked at this level for at least 2 consecutive years
- coaches of professional teams (University, Federation or League teams) who worked at this level for at least 5 consecutive years
- former ATP/WTA Top 500 singles players
- former ATP/WTA Top 250 doubles players
- coaches who successfully completed the GPTCA Level B course.
 

The level C is suitable for coaches working with the upcoming ITF World Tennis Tour juniors.

The level C can be given to the following:
- coaches of ATP/WTA Top 1000 players who worked at this level for at least 2 consecutive years
- coaches of ITF Top 100 juniors who worked at this level for at least 2 consecutive years
- coaches of professional teams (University, Federation or League teams) who worked at this level for at least 2 consecutive years
- former ATP/WTA Top 1000 singles players
- former ATP/WTA Top 500 doubles players
- coaches who successfully completed the GPTCA Level C course.