Mats Wilander believes Nick Kyrgios has the capability of causing a 'big upset' in the Australian Open, but has raised concerns about the Aussie star's fitness. Kyrgios' first-round match against Jacob Fearnley next week will be his first match in a major tournament in over two years.

Britain’s Jacob Fearnley was handed a blockbuster Australian Open debut against Nick Kyrgios. Scot Fearnley was still at college in the United States during last year’s tournament but has rocketed up to 86 in the world after a stunning start to his professional tennis career, which included taking a set off Novak Djokovic at Wimbledon.

Nick Kyrgios faces another injury setback in his planned return to Grand Slam tennis at the Australian Open after an abdominal strain forced him to withdraw from an exhibition with Novak Djokovic this