By Frank Dalleres Tiger Woods has insisted he can still challenge for the Open and taken a swipe at Colin Montgomerie over suggestions that the three-time Claret Jug winner should retire. Woods is in the field for this week’s Open at Royal Troon, where he believes he is back in shape to contend for a major that rewards strategic golf more than prodigious hitting. “The older you get the less you can carry the golf ball but over here, you can run the golf ball 100 yards if you get the right wind and the right trajectory,” said the 48-year-old. “I think that’s one of the reasons why you see older…