As the final day of golf at Irving approaches, let's take a look back at what's happened so far and what we can look forward to in the final round.

It may not be the most famous tournament on the PGA Tour, but with the list of past winner featuring the likes of Jason Day and Sergio Garcia, perhaps we shouldn't be surprised to see some truly world class golf being played. James Hahn leads the field with a strong -12, although Billy Horschel's -11 score keeps Hahn's lead to a minimum. Meanwhile, 2010 champion Jason Day sits at T3 with Jason Kokrak at -10. Day will feel encouraged after a monstrous climb of the leader board; entering the weekend 10 strokes off the pace before storming his way into contention. If the Australian can play off the momentum in the final round then he has every chance of taking a long overdue victory.

It's been a different story, though, for the other T3. Jason Kokrak sat on a five stroke lead heading into the weekend, only to throw the tournament wide open with the ugliest of rounds, including a triple-bogey at the fifth. It now becomes as much about mental strength as golfing ability for Kokrak, who needs to regain the right mindset before he can even think about regaining the lead.

Day wasn't the only past champion to have a miraculous surge into contention on Saturday, with World No. 5 Sergio Garcia hitting a sizzling 29 on the back-nine to hurl himself into T6 at -8.

Brooks Koepka was the name on the lips of tipsters everywhere, having missed out to Sergio Garcia in a playoff in last year's tournament. However, a disappointing Even on Saturday saw Koepka slip to T24 and all but lose sight of the leaders. Matt Kuchar also looked a promising bet going into the tournament. Sitting at T14 and -6 he's certainly not out of contention, although it poses a serious uphill battle and one that I don't see him winning.

Now, it would be quite simply despicable to not give credit to Jason Day for his outrageous 60-foot putt at the 17th hole of the TPC Four Seasons course. The putting specialist put his TaylorMade Spider Tour Red putter to the ultimate test and it responded extraordinarily well. Perfectly measured, exquisitely weighted and beautifully executed. It's a good thing the golfers can't hear the commentators because Jason Day would no doubt have been lining up more conservatively had he heard the commentator say 'he'll be happy to two-putt this one' seconds before the stroke.