Masters 2013: Updates on Tee Times for Golf's Top Stars and Sleepers at Augusta

We're starting to reach the business end of the Masters.

It doesn't matter what the round, watching golf at Augusta is always enjoyable. It's in the final two rounds, though, that reputations are made and broken.

Hardly anybody will remember Marc Leishman and Jason Day were the leaders in Rounds 1 and 2, respectively. Having two relative unknowns near the top of the leaderboard early is great, but the weekend is what fans will think of first in regard to the 2013 Masters.

There are plenty of compelling reasons to watch this year, whether it's the play of Day, Fred Couples only being a stroke behind or Tiger Woods chasing another green jacket.

If golf isn't your thing, just watching to see how the top stars and leaders do should suffice and provide plenty of entertainment.

Here are three groups that should grab your attention and two sleepers who could rise up the leaderboard.

Top Groups to Watch (all times are ET and courtesy of Masters official website)

Group 23: Rory McIlroy and Charl Schwartzel (1:25 p.m.)

This is one of the more intriguing groups. In Rory McIlroy, you've got one of the top young stars on the tour. With Charl Schwartzel, you've got the 2011 Masters champion. Both are among the six golfers in a tie for 14th at two under, so they could have a say in how this thing turns out in the end.

The weekend has been unkind to McIlroy at Augusta over the last couple of years. He needs to atone for some of that disappointment with a strong performance in the final two rounds.

For Schwarzel, this is an opportunity to rebound after a weak 2012 campaign. There's no shame in being a one-time Masters winner. He may want to build his career on just that one accomplishment.

Group 25: Tiger Woods and Gonzalo Fernandez-Castano (1:45 p.m.)

With all due respect to Gonzalo Fernandez-Castano, Tiger Woods is the reason you watch this group.

Many fans and experts have been quick to proclaim Woods is back and ready to go after Jack Nicklaus' record of 18 major wins. With his strong play in the second round, there's every reason to believe that he is finally back to something near his best.

Although he struggled a bit on the back nine, Woods provided plenty of moments that harked back to his domineering performances at Augusta years ago. Even at three strokes back, none of his competitors will be happy to see Woods anywhere near the leaders going into the third round.

Group 31: Jason Day and Fred Couples (2:45 p.m.)

Do you really need another excuse to watch this pairing?

Day is the leader going into the third round. With a four-under 68 in the second round, the Australian moved to the top at six under. As Woods was fading, it was Day who picked up four birdies on the back nine. He's one shot ahead of fellow Australian Leishman and his partner on Saturday, Couples.

What a great story it would be for the 53-year-old Couples to win his second Masters title. It's unlikely he'll hold up over the weekend, but that doesn't take away from the excitement of seeing if he can actually buck the odds.

Top Sleepers

John Senden, -2, T14

The Masters has been full of surprising Australians, whether it's Day, Leishman or John Senden, who sits in a tie for 14th. Senden is another of the group who actually managed to better their scores in the second round.

He was only at even par after the first round but managed a two-under 70 in the second. Senden's day would have been even better had he not bogeyed Nos. 16 and 17 near the end of the round.

Regardless, it was a very strong display from Senden. Few golfers who have separated themselves from the pack. Four shots is not an insurmountable lead. Some guys ahead of Senden could fall off, leaving space at the top if he can repeat his performance on Saturday.

Scott Piercy, E, T27

Only one golfer moved up the leaderboard more than Scott Piercy. With a three-under 69 in the second round, he managed to jump 34 spots and into a tie for 27th. As the 38th-ranked golfer in the world, it's not a complete surprise that Piercy would have a strong day; however, few could have predicted he'd do as well as he did.

The wind was a major factor, and many had trouble gaining even a single stroke. Piercy went out and bettered his first-round total of 75 by six strokes. That's a massive jump.

It could just be an instance of everything coming together for Piercy in one round, and he'll level out over the third round. Should he be able to pick up a few more strokes on Saturday, though, Piercy could make this a tournament to remember.