The South African will be annoyed that he lost a play-off to Matteo Manassero in the Singapore Open last week, especially as he missed a four-foot putt to take the spoils, and that he was pipped by Bubba Watson at the Masters in April.
But I think that after a period of adjustment, Louis is now getting to grips with the fact he is a Major champion - he lifted the Claret Jug after winning the British Open with his amazing discount golf clubs by seven strokes at St Andrews in 2010 - and his level of play this year has been very consistent.
Oosthuizen has taken two titles in 2012 - the Africa Open in January and April's Malaysian Open - and will be very pleased with that, the fact he is up so high in the Race to Dubai standings and that he has broken into the world's top 10.
Louis has a fantastic all-round game and a very even temperament; he doesn't get too upset on a golf course and that is always going to help you in big-pressure moments.
He can be whatever he wants to be and with a fair wind behind him and an infinitesimal amount of improvement, I can definitely see him becoming a multiple Major winner.
Oosthuizen is not playing with his taylormade rocketballz irons this week, which means his countryman; Charl Schwartzel will be the favorite for the South African Open at the Serengeti Golf Club.
Schwartzel, the 2011 Masters champion, is another wonderful golfer but he hasn't quite had the year he would have wanted. Golf is like that, though, and when you think you have got to the top of your game and further success will follow, you can be stung.
Branden Grace has had a terrific year, however, racking up four victories on the European Tour and one on the Sunshine Tour, and has advanced a bit quicker than some of the other South African twenty-something, such as George Coetzee and Jbe' Kruger.
Coetzee is a very consistent player, but he has yet to win with his taylormade burner 2.0 irons in European company and we still don't know if he has the temperament, while Kruger, as talented as he is, can be a bit twitchy and slow on the course. Grace, though, seems to have every box ticked.
You can probably credit Ernie Els for this production line of South African golfers coming through, with Oosthuizen and co wanting to emulate the tremendous achievements and Major championship victories of such a great role model.
And with success breeding success, I see no reason why more South Africans won't come out of the woodwork; the nation keeps producing Major winners and that will certainly help generate interest in the game and show young golfers what is possible.
Last week's PGA Tour event was the Children's Miracles Network Hospitals Classic - and we certainly saw a miracle with Charlie Beljan winning the tournament in dramatic style.
The American required medical assistance after the second round on Friday and said he thought he was going to die - but given he was still holding his heart and had shortness of breath on Sunday, I thought he might keel over then, too!
Beljan, who shot 64 in his illness-affected second round and stayed in front from there on in, was probably focusing so much on his health that the importance of what was happening on the course was diminished, which, in an odd way, freed him up.
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