The plus side is if they come through them with two or three wins and a couple of bonus points they'll know they can foot it with anyone in the competition but if they're sent packing then the season will be as good as cooked.
If Hammett looks at the points table during the next week or so he will rue his side's inability to put a fourth try on the woeful Force a couple of weeks ago and will curse the Palmerston North wind that sent Beauden Barrett's goal-kicking askew last Friday night.
That 18-16 loss to the Stormers in Manawatu was an admirable forward performance but was ultimately four points gone begging for the Hurricanes who should have put the men from Cape Town away.
Too often this season the Hurricanes have been their own worst enemy with an inability to close out sides proving costly while their slew of handling errors would make a schoolboy 3rd XV cringe.
On Sunday morning the Hurricanes will meet the Bulls at Loftus Versfeld in Pretoria and it doesn't seem like a venue to help breathe life in to your season.
In fact the thin air at just over 1200m above sea level at Loftus may leave the Hurricanes gasping for breath as they struggle to keep their playoff hopes alive.
They're down to their third-string hooker in Ash Dixon while the reserve rake Reggie Goodes is a converted prop.
One thing that will give the side belief is the effort they put in up front last week against a committed Stormers outfit.
Blindside flanker Brad Shields has found another level in the past few games and is beginning to fill out the enormous potential he possesses.
Prop Ben Franks, lock Jeremy Thrush and openside Karl Lowe all impressed against the Stormers and they will have to meet the Bulls head on this week if they want to lay the platform for their backline who have stuttered recently.
With Barrett back at pivot they should rediscover their attacking flair and it will be interesting to see how Tusi Pisi goes in the No 12 jersey in place of a jaded Tim Bateman.
Pisi's running game and kicking threat could complement Barrett nicely and Bateman was clearly in need of a rest after seemingly playing non-stop for the past year for the Hurricanes, Wellington Lions and the New Zealand Maori.
Julian Savea returns this week from a self-imposed stand-down following his common assault charge and it will be intriguing to see how he plays given the legal problem he has hanging over him.
Following their run with the Bulls the Hurricanes head to Bloemfontein to tackle an upstart Cheetahs side who have been surprisingly useful this year and currently sit in sixth place.
Hurricanes: Andre Taylor, Alapati Leiua, Conrad Smith (captain), Tusi Pisi, Julian Savea, Beauden Barrett, TJ Perenara; Victor Vito, Karl Lowe, Brad Shields, Jason Eaton, Jeremy Thrush, Jeffery Toomaga-Allen, Ash Dixon, Ben Franks. Reserves: Reggie Goodes, Ben May, Mark Reddish, Faifili Levave, Jack Lam, Chris Smylie, Tim Bateman.