Cape Town - Tim Henman believes Novak Djokovic is by the favourite to defend his Wimbledon title at SW19 later this month.The Serb has been in superb form this year, winning back-to-back grand slams and notching up a 44-3 win-loss record for the year.Henman's fellow Brit Andy Murray has also been impressive in 2016, despite losing out the Djokovic in both grand slam finals."Right now Djokovic is the clear favourite in any tournament he plays with the consistency he shows but Andy has separated himself from the rest," said the former world number four."You have to control the things that you can and who Andy is employing is neither here nor there for Djokovic."Henman added that the re-enlistment of former coach Ivan Lendl is a bonus for the world number two Murray."While getting Lendl back on board is going to work in Andy's favour, I wouldn't say Djokovic is going to be that bothered," Henman added.