Mats Wilander believes the return of Ivan Lendl can unlock the missing ingredient that could propel Andy Murray back up the world rankings and provide the Scot with a fitting swansong. The three-time Grand Slam champion has bemoaned his struggle for consistency since returning from career-threatening hip surgery and currently sits at 85 in the world. Ad/> Murray insists he is still capable of competing with the Tour’s finest stars but his failure to back up some promising results with deeper runs in major tournaments has left him hugely frustrated.