The four-month season of significant championship golf in 2021 comes to a close Sunday as the 149th Open Championship gets ready for its final 18 holes at Royal St. Georges. The competition therefore far has actually belonged to Louis Oosthuizen, who is attempting to declare his 2nd Claret Jug and 2nd career major championship.Its probably going to take one of the terrific rounds of his profession to get the task done with Collin Morikawa, Jordan Spieth and Jon Rahm chasing him over the last 18 holes in Sandwich, England. Should he succeed, Oosthuizen would become the first golf player to go wire to wire at an The Open given that Rory McIlroy in 2014 and just the 28th to win this occasion several times, joining names like Greg Norman, Seve Ballesteros, Nick Faldo, Bobby Jones, Tiger Woods, Tom Watson and Jack Nicklaus.Oosthuizen– the 18-, 36- and 54-hole leader– has actually been spectacular all week (and all significant season), but Morikawa and Spieth have been almost as excellent and sit one and there shots back, respectively. Include a let loose Rahm– hes going all out all on Sunday due to the fact that he has absolutely nothing to lose ending up fifth or 8th– and the final round must be quite a show, just as it has been for most of the last years at this event.Heres to another one on Sunday prior to the long, cold march to the next significant (the 2022 Masters is nine months away). CBS Sports will upgrade this story with scores and highlights from The Open below. Have a look at the live ratings at the top of this story, a more detailed leaderboard, Round 4 tee times and our complete audiences guide.