Matamata's reply, one of their few forays into enemy territory, was fortuitous, with striker Jack McNab's low cross into the penalty area was toe-poked into his own goal by sliding Tauranga defender Nathan Farey.
Tom Livesey squandered a gilt-edged chance to put Tauranga ahead right on halftime when his penalty attempt after Stu Watene handled the ball was saved by Matamata keeper Tom Pamment.
Matamata went ahead in the second half when Mark Van Der Salm's poorly-weighted back pass (not the first this season) was intercepted by McNab, who had his first shot blocked but buried the second.
Matamata's defensive quartet, who'd stopped running midway through the first half, were laying on chances think and fast, with Tauranga squandering them as quickly as they came until Craven burst forward, beat three and watch as his shot deflected off Mackenzie Smith past a despairing Pamment.
Pratt got his second and to Tauranga ahead again when Dwayne Signal's header back to Pamment was short of the mark, with the nippy midfielder getting in behind the defence to get a toe on the ball and watch as it dribbled over the goal-line.
Matamata had long run out of steam to launch any meaningful comeback but the chances didn't stop coming for the home side, although you can only wonder what sort of havoc Jindrich Hahn and Conor Irvine might have wreaked had they been given more than a token 10 minutes at the end of the game.