Lydia Ko's turned on the sizzle to be in a commanding position after the second round of the LPGA's season ending championship in Florida.

The world number one has shot a course record 62 to be 12 under for the tournament and three clear at the halfway point.

Ko spent a late night on the range with her coach after the first round tweaking things.

"Going into today I just wanted to focus on my game and I knew I had a great pairing.... and maybe it was the great vibes I got from them but obviously it's a great round and I'm in a better position than I ever could have imagined," said KO. "Over the weekend I just have to focus on me."


Tim Wilkinson and Steven Alker have both dropped down the leaderboard in their second rounds at the PGA Tour in Georgia.

WIlkinson is eight under for the tournament in a tie for 26th and Alker a shot back.