It now holds a three-game buffer inside the top four with two games to play in the home-and-away season.
Jaycob Dingwall was deadly in the first set with a 6-0 win over Ryan Byrne, but Elmore’s response was swift.
Mitch Byrne struck back 6-2 over Nash Hocking, while Jordan Tobin and Dale Grogin were 8-4 winners in the men’s doubles.
Hocking and Zack Holmberg retaliated with an 8-5 win, while Tobie Woodfine and Holmberg kept the momentum with an 8-2 win in the final men’s doubles set.
Rachael Major and Kaitlin Familari extended Rochester’s lead, while Louise Williams and Lillian Ward made it four sets on the trot.
Elmore’s Taylor Pratt and Jessica Byrne broke Rochester’s run with an 8-7 win, while Jane McAdam and Rory Hayes backed up their teammates with an 8-4 doubles win of their own.
But Dingwall and Ward ensured any hopes of a comeback were dashed with an 8-0 mixed doubles win with three sets to go, sparking a run of four consecutive sets to seal the 9-87 to 4-57 victory.
Rochester 1 will have a chance to test its mettle against the all-conquering Echuca 1 in the penultimate round 13.
Meanwhile, LBU 2 has raised the racquet for its first win of the season in a classic over Echuca 3.
After 12 rounds of CTA, LBU broke through by two games in a game that went right down to the final set.
Mitch Collins got his team off to the perfect start, 6-1 from Ash Kirchhofer while Jacob Haines ensured LBU took out the men’s singles, 7-6.
Collins then teamed up with Ian Haines to claim an emphatic 8-2 doubles win.
Echuca struck back hard through the pairing of Ben Potter and Hugh Melville (8-1) before Melville again blitzed his doubles opponents 8-2 to give Echuca a one-game lead.
The Townrows, Jordan and Jenny made it three sets in a row for Echuca, before Milly Haines and Michelle Stone wrenched back the lead for LBU with an 8-2 win.
Kirchhofer and Jenny Townrow (8-4) kept Echuca within striking distance, before Jacob Haines and Michelle Stone extended LBU’s lead to six games with two sets to play.
Echuca pair Hugh and Laurie Melville’s 8-3 win drew them within a game heading into the final set, but Harrison Condliffe and Lois Toohey held their nerve with a 8-7 win to ensure LBU’s maiden win of the year, 8-77 to 5-75.
Elsewhere, Rich River 1 and Echuca 2 played a thriller of their own, with Rich River victors by three games.
Ladder leaders Echuca 1 flexed its muscle with a 36-game win over LBU 1.