Golfer loses out on major title after viewer email leads to four-shot penalty

American Lexi Thompson suffered heartbreak at the ANA Inspiration as she lost a play-off to So Yeon Ryu having earlier been handed a four-shot penalty midway through her final round.

Thompson was leading by three shots on 17 under, having just played the 12th hole, when she was informed by tournament officials that she was being punished for incorrectly replacing a marked ball on the 17th green on Saturday, while also incorrectly signing her scorecard.