Andrew Johnston surges up Czech Masters leaderboard with stunning 63 in Prague

Johnston holed 10 birdies and had just one bogey on his card as he rocketed up the leaderboard on 12 under par.

The 35-year-old is tied for second spot with Scotland's Richie Ramsay, who carded a second-round 67, and Sweden's Jesper Svensson.

But Frenchman David Ravetto leads the way on 13 under after seven birdies — plus an eagle at the par-five 16th — meant he matched Johnston's course-record 63.

Johnston's fellow English challenger Brandon Robinson Thompson lies two shots off the lead after following up his first-round 65 with a 68.

But overnight leader Pieter Moolman is now five shots off the pace after a level-par 72 proved well short of his first-round heroics.

"It is such a strange game, isn't it. Everything has gone in today," Johnston told the DP World Tour website.

"It's always good to shoot that score around any golf course. I was really steady today, but the difference was the putts dropped."

Ramsay, meanwhile, added: "I am delighted with the way I played.

"This is a good indication of what I am capable of. I still love doing what I do and it is great to be at the top of the board."