In the Northern Region, Central United prevailed in the clash of the 2014 semi-finalists at Kiwitea Street as the hosts edged Onehunga Sports 1-0 thanks to a 15th minute strike from Vincent Pineau.
Champions in 2008, East Coast Bays were made to work hard by NRFL Division 1 side Waiuku AFC before claiming a 2-0 win at home with second half goals from Dylan Stansfield and Judd Baker getting Willy Gerdsen's men across the line.
NRFL Premier League leaders Eastern Suburbs saw off the challenge of Division 1 frontrunners North Shore United with a 4-1 victory at Madills Farm.
The hosts survived an early scare when Simon Williams saved a North Shore spot kick in the 18th minute before going on to score four straight goals with Brandon Barnes netting twice.
Birkenhead United progressed with a 3-1 victory over Forrest Hill Milford - an Adam Dickinson double getting the visitors home at Becroft Park.
Division 1 Tauranga City United sent Premier League Melville United out, the visitors coming from a goal down to claim a 2-1 win at Gower Park as Colm Kenny and a Jerahl Hughes spot kick got the Bay of Plenty side into the fourth round draw.
After holding a 2-0 halftime lead, Division 2 leaders Papakura City FC survived a comeback from Manukau City AFC to advance with a 4-3 win after extra-time at Walter Massey Park - a hat-trick to Harry Hillary-Jenkins proving the decisive contribution.
On Sunday, NRFL Premier League side Three Kings United advanced with a 6-2 win over Division 2 Oratia United at Parrs Park with Allan Pearce and Dylan Manickum each scoring a hat-trick while Division 1 Mangere United needed two Sanni Issa goals and extra time to see off the challenge of AFF/NFF Conference leaders Waitemata City 2-1 at Centre Park.
In the Central Region, 2014 semi-finalists Napier City Rovers moved on with a 4-2 away win over Palmerston North Marist at Memorial Park.
With the scores locked at 2-2 in the 85th minute and extra time looming, two goals in the final five minutes for Rovers earned their spot as Angus Kilkolly struck from the penalty spot before Josh Stevenson provided the late insurance strike.
Wairarapa United, champions in 2011, advanced with a 3-0 win over Island Bay United on Saturday night as Magna Viera's 11th minute strike combined with a 35th minute Island Bay own goal gave the hosts a 2-0 halftime lead at Masterton Memorial Park which was extended by Liam Hare's 90th minute capper.
In the other evening game on Saturday, Wellington Olympic saw off Petone FC 3-1 at Wakefield Park as Luis Corrales scored twice for the hosts.
On Sunday, Western Suburbs were too good for New Plymouth Rangers, two goals in each half netting a 4-0 win at Merrilands Domain with Men's U-20 international Noah Billingsley among the scorers for the visitors.
In the deep south, Dunedin Technical were emphatic 10-0 winners over Northern Hearts as Tim McLennan scored four and Aaron Burgess hit a hat-trick for the visitors at Aorangi Park.
Mosgiel AFC ended Otago University's cup run with a 31st minute Rahan Ali goal at Memorial Park.
The timing of the draw for the fourth round of the ASB Chatham Cup will be confirmed on Monday 29 June.
ASB Chatham Cup 2015 - Round 3
June 27-28
Northern Region
Central Utd FC 1-0 Onehunga Sports (half: 1-0)
CEN: Vincent Pineau 15'
ONE: -
Melville Utd 1-2 Tauranga City Utd AFC (half: 1-1)
MEL: Marc Evans (pen)
TAU: Colm Kenny , Jerahl Hughes (pen)
East Coast Bays AFC 2-0 Waiuku AFC (half: 0-0)
ECB: Dylan Stansfield 54', Judd Baker 87'
WAI: -
Forrest Hill Milford AFC 1-3 Birkenhead Utd AFC (half: 0-0)
FOR: Jamie Mason
BIR: Adam Dickinson 2, Dan Morgan
Eastern Suburbs AFC 4-1 North Shore United (half: 2-0)
EAS: Rudy Mozr, Michael Bryant, Brandon Barnes 2
NOR: Marcel Nolde
Manukau City AFC 3-4 Papakura City FC AET (half: 0-2, full: 3-3)
MAN: Federico Cranca 2, Cody Patterson
PAP: Junior Bukalidi, Harry Hillary-Jenkins 3
Oratia Utd 2-6 Three Kings Utd (half: 1-3)
ORA: Chris Smart, Jack Coombes
TKU: Allan Pearce 3, Dylan Manickum 3
Mangere Utd 2-1 Waitemata City AFC AET (half: 1-1) (full: 1-1)
MAN: Sanni Issa 2
WTM: Daniel Gates
Central Region
Palmerston North Marist 2-4 Napier City Rovers (half: 1-1)
PNM: Tyson Brandt 42', Khair Jones 62'
NCR: Saul Halpin 16', Ryan Tinsley 54', Angus Kilkolly 85' (pen), Josh Stevenson 88'
Wellington Olympic AFC 3-1 Petone FC (half: 2-1)
WOL: Hugo Reeve 8', Luis Corrales 33', 74'
PET: OG 20'
Wairarapa Utd 3-0 Island Bay Utd AFC (half: 2-0)
WRP: Magna Viera 11', OG 35', Liam Hare 90'
IBU: -
New Plymouth Rangers AFC 0-4 Western Suburbs AFC (half: 0-2)
NPR: -
WSB: Juan Chang 7', Noah Billingsley 12', Riley Kelliher 68', Ahmad Mohammadi 87'
Mainland Region
Cashmere Technical 2-1 Ferrymead Bays (half: 1-0)
CSH: Tom Schwarz 25', 60'
FER: Chris Anderson 62'
'
Coastal Spirit 3-2 Nomads Utd (half: 2-1)
CSP: Shane de Freitas 16', Joshua Lis 21', 50'
NOM: Alec Beresford 37', Sean Gill 55'
Football South Region
Mosgiel AFC 1-0 Otago University (half: 1-0)
MOS: Rahan Ali 32'
OTU: -
Northern Hearts AFC 0-10 Dunedin Technical (half: 0-4)
NTH: -
DUN: Tim McLennan 2', 33', 42', 64', Aaron Burgess 18', 74', 77', Josh Stewart 83', 87', Andrew Douglas 48'
