Dustin Johnson has won the US PGA Tour Tournament of Champions. He started the day with a two-shot lead but was four ahead by the 4th and six in front at the turn. He almost made a hole in one on 12th but eagled instead moving to 7 ahead. In the end Johnson carded eight-under par 65 for 24-under 268 and his 17th PGA victory.  This eight shot margin is the biggest of his career so far. He has now won an event every year since his rookie year, 11 years ago, it is the longest active streak on Tour, only bettered by Tiger Woods.  John Rahm came in second at 16-under, Brian Harman was third at 15-under and Hideki Matsuyama tied for fourth with Pat Perez and Rickie Fowler at 14-under. Johnson stays at number 1, Rahm moves up one place to number 3, Harman up four places to 23, Matsuyama stays at 5, Perez moves up three places to 16 and Fowler stays at 7 Read more at http://www.golftoday.co.uk/tours/rankings/ world_current.html#WdeAu6ZAkqDmJfmy.99 W