Rory McIlroy confident he can catch in-form Hideki Matsuyama

Rory McIlroy is confident he can overturn a six-shot deficit to Hideki Matsuyama and claim a fourth win of the year in the WGC-HSBC Champions in Shanghai.

World number three McIlroy managed just two birdies in an opening 71 at Sheshan International on Thursday to trail overnight leader Rikard Karlberg by seven shots.

And although the four-time major winner carded seven birdies in a second round of 66, that was only good enough to reduce his deficit by a single shot thanks to a brilliant 65 from Matsuyama.