TAB: The weekend's betting trends - PGA Championship and NRL

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With the final major of the year teeing off at Bellerive Country Club overnight, punters are more than happy to back the favourite, Dustin Johnson ($8.50) to break his two-year major drought.

The American has certainly earned his favouritism with two wins in his last five starts and he stormed home at the Bridgestone Invitational last week to finish in a tie for third.

One bettor has laid $4,500 on the world number 1 at $12 for a return of $54,000, while another has staked $3,500 at $11 to return $49,500.

However he's not the only golfer to be well backed this week with a $2,000 bet coming in on Swede Henrik Stenson ($31), $3,000 on Rory McIlroy ($13) and a $1,500 bet on the ever popular Tiger Woods ($18) to win his first major in more than 10 years.

In the NRL, the punters have come flooding back for the Warriors this week on the back of their gutsy win in Wollongong.

One bettor has laid $10,000 on the Warriors to beat the Knights on Friday night at $1.35, while there's also been a bet of $6,000 and two further $1,000 bets on the home side.

97% of all head to head money is on the Warriors despite their heavy favouritism. There is also a confidence among punters they can win well with all the money on them to cover the 7.5 points they are giving away.

Elsewhere in the competition, the Cowboys have been a popular bet in the Queensland derby with the line moving from +3.5 to +2.5 and a $1,000 bet on them to win the match at $2.25.

The Melbourne Storm are also being tipped to bounce back from their loss to Souths, with a $2,000 bet on them to beat the Sharks at $1.50 and a further $1,000 staked at $1.47.