England's Matt Wallace opened up a one-shot lead at the halfway stage of the British Masters on Friday before explaining that giving up pizzas has helped energise his rise up the rankings.

The world number 36 fired a second round 67 on a lightning-hit day in the English north-west as he targets a fifth European Tour title. Wallace has recently started working with fitness expert Steve McGregor, who counts former world number ones Rory McIlroy and Lee Westwood among his previous clients. "I've got a brilliant team with the inclusion of Steve now, his history speaks for itself getting two players to world number one," the 29-year-old said. "He's assessing what I'm doing during the week with my physio and we'll come up with a plan to get better and fitter and stronger and mentally stronger.