When David Leadbetter and his offsider Sean Hogan took on coaching Lydia Ko they probably didn't realise just how dedicated the youngster was to the game.
The experienced pair were confirmed in December as Ko's new instructors after she split with long-time adviser Guy Wilson due to the geographical constraints of Wilson being based in New Zealand, while Ko set up camp in Florida.
Ko's rookie season as a full-time professional on the LPGA Tour has been a success with seven top-10 finishes from 14 events this year, while she also won the Swinging Skirts LPGA Classic during the same week she celebrated her 17th birthday in April.
"The challenge [now] is balancing her life," Leadbetter said. "Because she's an avid practiser and she's very dedicated and the thing we are trying to get through to her, and her parents for that matter, is it's all about balance and pacing yourself.