The last time Singh failed to win on the PGA Tour was 2001 and he had six top-three finishes that season.

But since his late-August flop, Singh beat Sergio Garcia in a playoff at The Barclays and lapped the field with his stellar 63 on Sunday at the Deutsche Bank Championship.

The two playoff wins have him in first place in the FedEx points race by a healthy margin. If he wins again at the BMW Championship this week, the race is over. He can also clinch with a fifth-place finish or better as long as a player from outside the top 12 in the standings wins the tournament.

Only two players have a puncher's chance to overtake Singh: Garcia and Canadian Mike Weir. Here's how they can still claim the title:

Sergio Garcia
Even if Sergio wins both the BMW and the season-ending Tour Championship, he will need Singh to fail to earn enough points to catch him.

Singh could keep the lead with a pair of third-place finishes, for example.

Garcia needs to win at least one of the last two events and place in the top three at the other and hope Singh finishes in the middle of the pack.

Even if Singh finishes last in both tournaments, the PGA Tour calculates Garcia would need a win at either event and either third this week or a fifth in Atlanta.

Mike Weir
Weir starts the week in third, about 1,300 points behind Garcia. He also needs two wins and modest finishes from Singh, such as fourth or higher, to claim the title.

Like Garcia, Weir can win with one victory and a second-place finish at the other as long as Singh places lower than 13th in both events.

If Singh finishes last in both events, Weir needs a win and either a third-place finish this week or a runner-up next week.

Everyone else
The rest of the pack needs two wins and for Singh to finish up the track. In fact, only players already in the top 24 even have a chance in this scenario.

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