Lydia Ko's new coach has confirmed the youngster has signed what's expected to be her biggest endorsement deal yet.
The teenage golfing sensation has signed with Callaway to use their clubs and equipment after her recent switch to the professional ranks.
David Leadbetter said he's with Callaway and they're very excited about having her on board.
Leadbetter has spoken to Ko's former coach Guy Wilson about what's best for Ko and he believes they'll have more conversations going forward.
