Pirates beat Green Island 45-27 at Hancock Park because it had more control in the forwards and was able to dictate the game.
The inclusion of Paul Miller and Daniel Johnson early in the second half gave Pirates the resurgence they needed to overcome a determined Harbour side at Watson Park.
Replacement wing Tony Fenner made the difference when he came on in the second spell and kicked four penalties for Southern in atrocious underfoot conditions at Bathgate Park.
Fullback Matt Faddes scored a brilliant try in injury time to clinch a deserved win for University A over Pirates at Hancock Park.
A judicial hearing has ruled neither Pirates nor Crescent will be eligible to play the senior section two final this Saturday.
The blood pressure of the Alhambra-Union coaching staff rose suddenly when Pirates attacked the line in the final seconds at Carisbrook on Saturday.
Pirates could not quite win the Jack Hore Trophy for the first time since 2002, but a draw with Southern at Hancock Park was enough to lock away the Challenge Shield for the summer.
Glenn Dickson's boot punished Harbour's indiscipline as Pirates claimed a narrow win at Watson Park.
Taieri and Pirates were the big movers in Dunedin club rugby on Saturday and both teams helped their semifinals hopes with impressive wins.
Alando Soakai and Fetu'u Vainikolo proved inspirational forces for Kaikorai as it continued its late run towards a semifinal spot with a big win over Pirates at Hancock Park.
It was club rugby at its competitive best when the students won a tense game at the outer University Oval against a Pirates team that refused to give up.
Southern fell to its first loss of the season to a determined Pirates side at Bathgate Park.
Taieri muscled up in the forwards to claim a deserved breakthrough win of the season in front of an appreciative home crowd at Peter Johnstone Park.
Hooker Clayton Jeftha was in dominant form as Pirates continued its winning form to beat Zingari-Richmond at Hancock Park.
Kieran Fowler continued his magic touch to help Pirates beat Alhambra-Union in the Dunedin premier competition when he kicked four penalty goals at the North Ground on Saturday.
A rampant Pirates scored 10 tries in beating Alhambra-Union in the play-off for third and fourth in the Dunedin premier rugby competition.
Dunedin comfortably beat Pirates in the main semifinal at the University Oval, capitalising on every opportunity it had to score points.
Stoic defence was the key to Pirates' hard-earned win over Southern in a gripping game at Tahuna Park.
A penalty goal by Brenton Kramer was the only tangible evidence of the forward slog as Harbour eked out a win over Pirates in the wind, rain and chill at Hancock Park.
Glenn Dickson's kicking and tactical nous were key ingredients in Pirates' well-merited win over Alhambra-Union at the North Ground.