Tiger Woods faces an uncertain future in 2016 when he returns from injury.
Woods celebrated his 40th birthday on 30th December, 2015, but he must be struck by the fact that time stands still for no one and he will face a different golfing landscape when, or if, he returns to competition in 2016.
Less than two years ago, and even as recently as last year, many Tiger fans still eagerly anticipated the day when, so they thought, he would match the record of 18 major championship victories held by Jack Nicklaus.
Woods had won five PGA Tour events in 2013 and, though major silverware had eluded him since 2008, there seemed no reason why he could not add to his haul of 14 majors as long as he stayed healthy.
But everything changed in 2014 when crippled by back pain that forced him out of a tournament in Florida; he underwent back surgery in the form of a microdiscectomy. He has never been the same since then.
Two further back surgeries later, expectations these days about the former world number one are much more muted.
Instead of discussion about whether Woods will win four or five more majors, talk has turned to whether he will even win another regular tournament, let alone one of the big four.