Ruoning Yin produced a final-hole chip-in to take a one-shot lead into the final round of the LPGA Tour's FM Championship, as European title hopes faded in Boston.

Yin holed her chip from just off the 18th green, having also posted a 20-foot birdie on the par-three 16th, to close a four-under 68 and move to 12 under at TPC Boston. The five-time LPGA Tour winner holds a slender lead over South Korean duo Sei Young Kim and Hyo Joo Kim, with Somi Lee a further three strokes back alongside American Jenny Bae.

"I think my swing is in a good spot, my putting and every part of my game I think are pretty good," Yin said. "I'm just going to play my game. I'm not going to play safe when it's time to go aggressive."

This week's event is the last LPGA Tour tournament before the Solheim Cup, live on Sky Sports from September 11-13, with Team USA trio Lauren Coughlin, Allisen Corpuz and Lindy Duncan all heading into the final day on seven under. Halfway co-leader Miyu Yamashita dropped six strokes back with a 75, while top-ranked Nelly Korda tied-49th after her third straight 72.