After an enforced absence in 2020 due to the coronavirus pandemic, The Open is thankfully back on this year's golf calendar.

Royal St George's will host the 149th edition of the tournament, a welcome return to the Kent course that saw Darren Clarke triumph a decade ago.

Shane Lowry is the defending champion, having prevailed at Royal Portrush in 2019, but can he retain his crown? Will one of the big guns instead get their hands on the famous Claret Jug, or could another long shot follow in the footsteps of Ben Curtis, an unlikely champion at the venue back in 2003?

Ahead of the opening round, it is time to take a look at some of the players who could be in contention for glory in the final major of the year.

U.S. Open and Open double

RAHM READY FOR OPEN CHALLENGE – Nicholas McGee

Jon Rahm has struggled to capture his best in four previous appearances at The Open, just one of which has seen him finish with an under-par score (-3 in 2019). However, only in 2018 has he missed the cut, and his blistering form in 2021 suggests he should be firmly in the mix this week.

His 11 top-10 finishes rank as the most on the PGA Tour this season. Rahm also leads the tour in scoring average (69.6) and in strokes gained (2.02 avg). Second in strokes gained tee to green and (1.82 avg) and fifth in greens in regulation (71 per cent), Rahm has displayed consistency that should lend itself to links golf. Further optimism came with a seventh-placed finish at the Scottish Open. The stage looks set for him to emphatically turn his Open fortunes around.

SPIETH HAS THE BELIEF – Russell Greaves

Jordan Spieth has three key things in his favour at this tournament: he's a man in form, he's exceptional with the putter, and he's won it before. The 2017 Champion Golfer of the Year has an overall putting average of 1.566 on the PGA Tour in 2021, placing him seventh in that metric.

That showing on the greens has laid the foundations for a year in which the 27-year-old has enjoyed eight top-10 finishes. He was in a tie for third at the Masters and boasts a career aggregate score of 21 under at the Open Championship, marking him down as a leading contender in Kent.

NO DOUBTING THOMAS AFTER RECENT RUN – Dan Lewis

Justin Thomas has struggled on the links in his career but ended up in a tie for eighth at the Scottish Open last week – his first top-10 finish since winning the Players Championship in March. He opened and closed with rounds of 65 at the Renaissance Club, where he used a new putter, and has not carded a bogey in his last 25 holes.

The 28-year-old may not be among the top group of contenders, but the 2017 US PGA Championship winner is certainly capable of carrying his momentum into this event to claim a second major in his career.

DUSTIN'S TIME TO HAVE A MAJOR IMPACT - Timothy Abraham

The form book might be against him, but world number one Dustin Johnson can have a Claret Jug-shaped silver lining to a disappointing 2021 in the majors. The American failed to make the cut at both the Masters and the US PGA Championship, alongside a 19th-placed finish in the U.S. Open this year.

An aggregate career score of +15 in The Open is hardly the stuff of a potential champion, but a decade ago he tied second behind champion Clarke. Johnson is a better player now, and the type of optimist capable of winning a major out of the blue. Write him off at your peril.

GLORY FOR RORY AGAIN? ABSOLUTELY! – Chris Myson

The Open champion in 2014, Rory McIlroy is rightly seen as a contender in Kent. He did miss the cut at this tournament in 2019 – but that was the first time he has done so since 2013.

When the Northern Irishman gets to the weekend at The Open, he is usually competitive. He had four consecutive top-five finishes prior to his previous disappointing outing and has a total of five in his career, including that triumph seven years ago. A top 10 at the U.S. Open gave McIlroy some much-needed major momentum and he can now finish with a flourish in his final opportunity this year.

HATTON CAN LINK IT ALL TOGETHER - John Skilbeck

Considering the winners Royal St George's has thrown up in the 21st century - Curtis and a past-his-prime Clarke - you might as well stick a pin in the field and take your chances. Tyrrell Hatton has twice won the Dunhill Links Championship which points to him knowing how to handle an Open course, and he has scored victories on each side of the Atlantic in the past 18 months so brings recent experience of closing out tournaments successfully.

Whether he wins or not is another thing: there are missed cuts on his Open Championship CV. However, two top-six finishes in the last four editions suggests the Englishman might not be far away.