The Dogs kept their unbeaten record intact with a hard-fought 2-1 win against Midlands in North Harbour yesterday.
However, Saturday's game against defending champion Auckland was postponed when heavy rain flooded the playing surface.
The game will now be played tomorrow, during what was meant to be a rest day for all teams.
That means Auckland and Southern will play five games in a row and Southern coach Dave Ross said it was unfair.
''It is just ridiculous what they [the officials] are asking the boys to do,'' he said.
Ross said Southern would have preferred to share the points or have a penalty shootout to decide the outcome rather than play on the rest day.
But the decision was made to reschedule the game and he believed that would put both Auckland and Southern at a disadvantage.
''We might have to be smart about how we play that game,'' Ross said, suggesting it might not be in Southern's best interest to play wholeheartedly if it beats North Harbour today.
''It we win [today], we will still have Northland and that will put us in a pretty good position to make the semis.''
Canterbury and Southern are at the top of the competition table with 12 points apiece. North Harbour (10 points) is in third place, with Auckland and Midlands on eight points with two wins.
While Southern is on track to match last year's effort and reach the final, it struggled to overcome a determined Midlands unit.
The Dogs trailed until Callum Bailey deflected the ball into the net to level the game 1-1 at halftime. Drag flick specialist Kane Russell scored the winner from a penalty corner with five minutes remaining.
Midlands goalie Stephen Graham kept his side in the game with some superb saves but his opposite, Hamish McGregor, was called on to make a telling save in the dying moments when Andy Hayward smashed a shot towards the goal from a penalty corner.
''They were very difficult to break down defensively, so it is really good to get those points,'' Ross said.
The news was not so good for the Southern women's team. It is firmly anchored to the bottom of the table after back-to-back losses, beaten 6-0 by Midlands yesterday and 2-0 by North Harbour on Saturday.
In four games, the Southern women have conceded 19 goals without responding with one of their own.
The team had been targeting the match against North Harbour for a possible victory but will have to refocus. It plays Northland today.
Last year's beaten finalist, Auckland, had an excellent weekend, beating defending champion Canterbury 4-2 on Saturday and backing up with a 3-2 win against Capital. It leads the competition with 13 points.
Canterbury rebounded from its loss to Auckland with a 2-1 win against Northland and shares second place with Capital, which also has 12 points from four games.
