Cardinals climbed out of a 3-0 hole after two innings with Steve Willis, Simon Maole and Grant Phillips all belting home runs.
Maroon had grabbed the early initiative when Cory Blake hit a sacrifice fly to score Thomas Egan, Wayne Vial singled to score Alex Aerakis, and Krizevac Tuitea doubled to bring Vial home.
But rising star Tuitea then found life difficult on the mound as he gave up a two-run homer to Willis in the third, a three-run blast to Maole in the fourth, and a two-run dinger to Phillips in the fifth.
Mark Christian hit a sole homer for Ellis Park Maroon.
Earlier, Tuitea had pitched well to earn a rare shutout in Maroon's 8-0 win over Dodgers. He allowed just four hits in five innings and got good back-up from his infielders.
Maroon managed to get on top of star Dodgers pitcher Ben Watts, with Andy Melville's double highlighting a three-run first inning, Alex Aerakis getting a triple in a three-run third inning, and Thomas Egan doubling in the fourth.
Saints joined Cardinals at the top of the points table with a pair of solid wins, 12-5 over Ellis Park Gold and 7-2 over bottom-placed Dodgers.
Against the Gold side, Michael Crowley whacked a two-run homer as Saints grabbed a 4-1 lead after the first inning.
Gary Pointon hit a two-run homer for Ellis Park Gold at the top of the third, but Crowley, Sam Jones, Michael O'Neill and Lachlan Brensell all singled to contribute to a five-run inning for Saints.
The game had an unusual ending when Saints scored three runs on balks - illegal pitches - called on Ellis Park Gold pitcher Pointon by a visiting umpire.
Travis McIntosh hit a home run and Crowley pitched tidily to lead Saints to their second win, against Dodgers.
Win-loss records and competition points after week seven: Cardinals (6-3) 28, Saints (6-4) 28, Ellis Park Maroon (4-6) 24, Ellis Park Gold (4-5) 19, Dodgers (4-6) 17.
The first representative fixtures of the season were abandoned because of wet weather in Invercargill yesterday.
Otago's under-15 and under-17 teams had scheduled games, and the senior men were trying to regain the Bates Shield from Southland.
The next major event on the calendar is the Jefferies Cup in Christchurch on December 3-4.
