Spieth ready to blow rivals away after receiving tornado warning

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Jordan Spieth's phone interrupted a media conference to notify him of a tornado warning after the two-time major champion backed himself to blow his rivals away a week before the Masters.

The world number six was fielding questions from reporters on the eve of the Houston Open when a buzzing noise stopped him in his tracks.

Spieth reached for his pocket to check his phone and the grinning Texan notified journalists: "Tornado warning, that's good. This room seems really stable!"

The 23-year-old may have to worry about the weather, but there is no chance Dustin Johnson will take the tournament in Houston by storm this week after the in-form world number one withdrew.

Johnson claimed a third consecutive victory at the WGC Dell Technologies Match Play on Sunday and will take a rest before going in search of his second Masters title at Augusta next week.

Spieth said his compatriot is undoubtedly the cream of the crop at the moment, but is confident he can take anybody on as he aims to heal the wounds of his final-round collapse at the first major of the year in 2016.

"I think Dustin Johnson is the guy to beat in golf no matter where you are, put him in any location anywhere right now," Spieth said. 

"I think just about everybody would agree with that. He's the guy to beat.

"I believe in my ability that if I play my best golf I can take down anybody, and you have to believe that, but I believe that right now he is the guy that everyone is saying 'he's playing the best golf in the world right now."

Spieth also reminded the media that he predicted that Johnson will come to the fore long ago.

Asked if he was surprised by Johnson's dominance, he said: "Not the slightest bit. I believe you guys can attest, I called this.

"I mentioned going back years Dustin Johnson is probably most talented player and it's a matter of time. Once he gets that click ... probably it was the US Open looking back on it now, he just got over that hurdle and whatever free-up he needed, that we didn't need him to have, he got.

"I'm not trying to say I told you so, but I definitely called this and I've been quoted on it. So I'm not in the least bit surprised that he is the one to beat and it's going to very difficult at this point."