Halfway leader Dustin Johnson stands in way of history-chasing Jordan Spieth at British Open
Masters and US Open champion believes he will have to shoot 10-under par for his last two rounds at windswept St Andrews to keep his hopes alive

Jordan Spieth sees fellow American Dustin Johnson as the main obstacle in his path to completing a clean sweep of the year’s first three major titles.
The 21-year-old Texan has already won the Masters and the US Open and needs the British Open crown to stand a PGA Championship away from being the first player in the history of the sport to achieve the calendar-year grand slam.
But so far at St Andrews, he has played second fiddle to playing partner Johnson, the man he pipped at the post to win the US Open title at Chambers Bay last month.
I still believe I can win this tournament. I need a really solid round [today], though, because Dustin is not letting up
After two rounds, Johnson leads at 10 under, with Spieth five shots adrift and needing a good round on Sunday to have a chance in Monday’s delayed finale to the tournament.
He still thinks he can make it three in a row.
“I believe I’m still in contention,” he said.
“I still believe I can win this tournament. I need a really solid round [today], though, because Dustin is not letting up.
“He’s the only one I can speak of, he and Hideki (Matsuyama) because I saw it first hand. Dustin is going to shoot a good round with less wind, and I’m going to need to shoot a great round to really give myself a chance.