Travelling extensively running after the ball (13)
I believe the answer is:
globetrotting
'travelling' is the definition.
(I know that globetrotting is a type of travelling)
'extensively running after the ball' is the wordplay.
'extensively running' becomes 'trotting' (trotting is a kind of running. I am not sure about the 'extensively' bit.).
'after' is a charade indicator (letters next to each other).
'the ball' becomes 'globe' ('globe' can be a synonym of 'ball').
'trotting' after 'globe' is 'GLOBETROTTING'.
Can you help me to learn more?
(Other definitions for globetrotting that I've seen before include "on travels" , "Travelling widely" , "Travelling the world" , "travel" .)