Overview

• Sociedad Sportiva beat Mar del Plata Club 24–23 in Bahía Blanca on a 78' try by Patricio Cantalejos and a conversion by Manuel Santos.
• Despite the loss, Mar del Plata Club stays atop the table with 45 points, with Sociedad Sportiva and Sporting on 42 and Los Cardos on 33.
• Sporting defeated Biguá 45–27 in a rescheduled fixture, tightening the race for top-four seeding.
• Los Cardos completed a storm‑halted match to win 9–0 over Los 50 under adjusted restart and player‑number rules for the final 20 minutes.
• The tournament is back on schedule with semifinals on Nov. 1 and the final on Nov. 15 at the No. 1 seed’s ground after makeup games cleared the backlog.