Johnson cruises to No. 1 ranking

Dustin Johnson went to No. 1 in the world with a world-class performance at Riviera.

Johnson turned a marathon finish into a Sunday stroll in the Genesis Open in Los Angeles. He finished the third round in the morning with a 7-under-par 64 to build a fiveshot lead, stretched it to nine shots at one point in the final round and coasted home to a 71 and a fiveshot victory.

Johnson became the 20th player to reach No. 1 since the world ranking began in 1986, ending Jason Day’s 47-week stay at the top.

Johnson had a one-shot lead when he arrived Sunday at Riviera, which lost 10 hours the previous three days to fog and torrential rain. Johnson had such command of his game that his longest par putt in the third round was from 4 feet, and he closed with three straight birdies to make the final round in the afternoon more of a coronation.

Johnson finished at 17under 267.

Thomas Pieters (63) of Belgium and Scott Brown (68) tied for second.

LPGA Tour: Ha Na Jang had an eagle and three birdies over her last six holes in a superb finish that set up a three-shot victory in the Women’s Australian Open in Adelaide.

Jang closed with a 4under 69 to finish at 10 under. Jang finished three shots ahead of Nanna Madsen.

Overnight leader Lizette Salas struggled in the last round and closed with a 5-over 78 to fade into a share of seventh place at 5 under with six others.

Champions Tour: Fred Couples won the Chubb Classic first title since 2014, rallying to beat Miguel Angel Jimenez in Naples, Fla.

Couples shot a bogeyfree 5-under 67 to finish at 16-under 200, three strokes ahead of secondround leader Jimenez.

Madison’s Jerry Kelly closed with a 66 to tie for third at 11 under in his senior debut. The three-time PGA Tour winner turned 50 in November. Jeff Sluman (68) and Rod Spittle (69) also were 11 under.