Easy wins highlighted the fifth round of the Caro Bowl.
Three men's teams scored the maximum 6-0 victories and a fourth dropped just one match.
Belvedere moved into the top four and to 21 points with a 6-0 win over hapless Pakuranga, who seem destined for relegation.
Belvedere, led by Davis Cup player James Greenhalgh, will probably have international Robbie Cheyne to bolster the team when the competition restarts after Labour Weekend.
Parnell were ruthless in their demolition of Mission Bay, not dropping a set on the way to a 6-0 victory and making Mission Bay's bid for the semifinals dependant on other results.
West End had Davis Cup player Mark Nielsen for an extra game and used him effectively to defeat Remuera and stay in third place on 26 points, behind Parnell on 35 and Waiata 30.
Nielsen downed former Davis Cup player David Mustard, and 15-year-old G. D. Jones made a rare appearance for West End on Saturday and beat Brett Hibbert.
Waiata dropped only the No 3 singles, by default, in their 5-1 win over Kohimarama.
In the women's competition, Parnell won the battle of the top sides, beating Royal Oak 4-2. However, it took comeback victories by Niki Tippins and Tanja Markovic over Rachel Dive and Nicola Kaiwai to secure the win.
Kohimarama stayed in third place with a 4-2 victory over Bucklands Beach.
Tennis: Big victories in Caro Bowl play
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