Tiger Woods has reined supreme over the golfing world for five years, holding the number one spot since 2005, but his position is now under threat from the supremely consistent Lee Westwood and Phil Mickelson.

The WGC-Bridgestone Invitational tees off today, Woods defending the title he has won seven times in Ohio. Should he fail to do so, he could lose his number one position to either Mickelson or Westwood.

Here’s how. If Westwood wins and Woods is outside the top two, he will become world number one. If he finishes second, Woods fails to finish better than tenth and Mickelson DOESN’T win the tournament, he will become world number one. If Mickelson wins the tournament, he will become world number one. If Mickelson finishes in the top four and Woods fails to finish in the top 37 (yes, THIRTY SEVEN), he will become world number one.

It’s a bit complicated, but basically the odds on favourite to be the best golfer in the world come Sunday is Lee Westwood – despite never winning a major.

There’s a few stumbling blocks. First of all, while Westwood is in fantastic form, Woods LOVES this course. If he is to regain some of the form he has lost since his fall from grace, it could well be here at Firestone. Then consider this – Westwood will tee off next to Woods for the first two rounds. That’s pressure, playing alongside the man you are trying to depose!

It’ll be compulsive viewing, and you’ll want to keep an eye on Mickelson too, of course. For me, I really hope Westwood does it, his game deserves it and it might just give him that boost to win that first elusive major.

Luke Donald and Lee Westwood are handily placed just one shot off the lead after the first round of The Players Championship at TPC Sawgrass. However, a confident feeling Tiger woods is only three shots further back.

Westwood: In with a shout at Sawgrass

Both Englishmen dropped just one shot but enjoyed six birdies in the opening round, while Woods had a shakier, but far more competitive round than that seen at Quail Hollow last week.

American J. B. Holmes and Australian Robert Allenby lead the way on six under but perceived wisdom suggests the course will favour Allenby – and other more strategic players – over the big hitters such as Holmes. That’s why Donald and Westwood will fancy their chances over the next three days.

Woods, too, is clearly feeling better about his game but some of his shots were wayward – not least at the 7th where he skied his shot, making just 190 yards. Another surprisingly low scorer on Thursday was Phil Mickelson. He matched Woods’ 70 for the round and said: “Shooting 70 today isn’t the round you want.”

Indeed not. That it’s an upturn for Woods shows how far he had fallen and how far he has to go to get back to anything close to where he was before his troubles.

We expect J. B. Holmes to fall away over the next 54 holes while Donald and Westwood remain consistent. Woods will consolidate his improvement but not challenge and Mickelson has work to do, but think he’ll finish higher than Woods. So do we predict an English winner at The Players Championship? No, not yet. Allenby has the game to win this and Donald has been disappointing for quite a while. Westwood, however, is in with a great shout.

The weather and subsequent conditions will play their part too. Thursday was ideal, but Saturday looks like being windier and may see some rain. Who will stand up to the changing conditions best is yet to be seen.

Who do you think will win The Players Championship? Will it be a shoot out between Westwood and Allenby or will we have a surprise winner in Donald – or someone else entirely? Give us your thoughts and predictions in the comments.