Easterns, who had already retained their Faithwear Cup title going into the final round of matches, finished the tournament with an unbeaten record after beating Westerns by 45 runs at Takashinga Sports Club.
Easterns turned in one of the best batting performances, opener Bernard Mlambo's 66 helping them post 270 for 9. Westerns lost two quick wickets, and although Charles Coventry smashed 75 they were always well off the pace.
In the other game, Northerns, who had started the competition so promisingly, slumped to a two-wicket defeat by Centrals at Harare Country Club. It was Northerns third successive loss and Centrals' first win of the competition.
Keith Kondo (58) and Cephas Zhuwawo gave Northerns a good start, but they failed to build as expected and it took a ninth-wicket stand of 36 in three overs between Trevor Garwe (42*) and Tinotenda Mutombodzi to help them reach 229 for 8. Centrals looked beaten when they slipped to 111 for 6, but Ryan Chinyengetere's 72 not-out from 90 balls turned the game on its head.