Players can also look forward to a share of a win bonus following each victory and an end-of-season performance bonus - often related to whether a team stays up or qualifies for Europe.
The Ospreys will overtake the Tigers if they win and deny them a bonus point, or if they claim a bonus-point win and Leicester only get one bonus point in defeat.
The turning point came 17 minutes from the end when Reds full-back Chris Latham went over before Wallaby winger Wendell Sailor sealed the win and a bonus point.
To win with a bonus point against a very tough Plymouth side was something we were happy with and not allowing them to score any points at all was particularly satisfying.
Irish now face the daunting task of ensuring a bonus-point win over reigning champions Leinster at Twickenham next Saturday while denying the visitors a losing bonus point.
Tries by Shaun Payne, Rua Tipoki, Brian Carney, Alan Quinlan and Marcus Horan secured a bonus point win.
They still lead nearest rivals Exeter, who missed the chance of a bonus point win at Nottingham on Sunday, by five points.
They could have moved 11 points clear at the top of Pool Two with a bonus-point win.
Bristol's Ed Barnes added two penalties but Ben Skirving and Steve Borthwick scored tries for a bonus-point win.
Another try would have given Bath a bonus-point win, which would have set up a last-four encounter against Harlequins.
South Africa clung to their lead in a desperate last 10 minutes but the bonus-point win sealed the group.
The visitors were already out of the reckoning for a place in the quarter-finals while Toulouse were hoping for a bonus-point win.
Bath's victory was vital to their Heineken Cup aspirations after Pool Five rivals Toulouse claimed a bonus-point win over the Dragons on Saturday.
The Premiership club needed to secure a bonus-point win against the pool two bottom side to have any hopes of progressing to the quarter-finals.
To claim a magical five-star rating from Morningstar or to win a year-end bonus, a manager might ignore the tax implications of frequently trading stocks.
The French side could have made it through to the last eight with a bonus-point win, and they at least gave themselves a chance with a bright first half.
After an opening bonus-point win at Edinburgh, this victory puts the Irish province in pole position in Pool Two, with home and away fixtures against Castres next up in December.
The bonus-point win on the final day of the season lifted Edinburgh above Leinster to second place in the Magners League table, while the Blues finished as the third ranked Welsh region in sixth.
Argentina are all but guaranteed to pick a bonus-point win over Namibia on Sunday, which means they would have 14 points to Ireland's nine heading into the final pool match on Sunday, 30 September.
They currently lie in third place in Pool Four on 13 points but can still mathematically qualify for the knock-out stages if they get a bonus-point win at Biarritz and Aironi beat Ulster at home.
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Leicester will go through as group winners if they win, draw or claim two bonus points in defeat at Swansea's Liberty Stadium.
"It would be a big bonus if I could win this tournament and be the first one out of Sweden to win it, " said Stenson.
But the Scarlets lacked the composure they had shown earlier in the game, failing to take advantage as they are still left seeking their first bonus-point league win of the season.
But the Blues held on for a scrappy win, although Biarritz have a precious losing bonus point to take back to France for next weekend's return fixture.
Or they could forge a middle ground, and establish a rule that if win-based incentives exceed a certain percentage of the total bonus package, the school is subject to various sanctions already imposed by the NCAA, including but not limited to loss of scholarships or bowl games participation.
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This Jumbo Bonus is not unusual in its proportion of salary to win-based incentives with a low graduation rate component.
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In Friday's final match, the Western Stormers earned a bonus point in a five-try, 40-18 win over the Coastal Sharks at Newlands.
Sarries earned a bonus point as they scored four tries in a 36-0 win over French side Bayonne at Vicarage Road.
For Saracens, it was a seventh straight league win but Sale drop to fifth in the table after failing to pick up a bonus point.
But in the last five minutes Nacewa made sure of the win with two drop-goals, before Walker's late converted try secured the losing bonus point which sent the Ospreys back to the top of the table.
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