Dallas McLeod capped a stirring Canterbury comeback with a 75th-minute try that might have saved his side's season.

The red and blacks had been on the verge of sinking to a fourth straight NPC defeat tonight at Orangetheory Stadium, but 17 unanswered points saw them leapfrog Tasman and into the playoff places with one game to play.

The defeat was a bitter blow for the Mako, who had controlled a sloppy contest for the majority of the opening hour.

But after Luke Romano had kickstarted the comeback, McLeod's try and the boot of Fergus Burke saw Canterbury escape with a much-needed win.

In a game dominated by the wet conditions and whistle of referee Tipene Cottrell, Tasman had been the better side in both areas.

But they also struggled to make that ascendancy count, with Mitchell Hunt's three penalties all they had to show for their efforts as they took a 9-7 lead to halftime.

Until the final quarter, Canterbury had been equally ineffective, with Burke providing one bright moment after cutting through the visitors' defence to score the game's opening try.

The hosts really should have added to that early advantage when Tasman saw their numbers twice reduced, as Lester Fainga'anuku and Sam Matenga both saw yellow.

The Mako were forced to play with 13 men for five minutes but spent the majority of that time with the ball in their hands, eventually welcoming back the sin-binned pair as Mitchell Hunt added three points at a time from the tee.