There was a mild upset in the first round of the Komoux Men's Real Baseball League playoffs Sunday at Highland Fields.
Fifth-place Brian McLean Yankees defeated fourth-place Courtenay Plumbing Twins 10-6 in the third and final game of the day to advance to the semifinals.
The third-place Williams Construction Nationals kicked off the day's action with a 10-2 win over sixth-place Dundee Giants, then second-place Happy's Source for Sports Indians eked out a 6-5 win over upset-minded, seventh-place Investors Group Athletics.
This Sunday's (Sept. 15) semifinals at Highland see the Nationals take on the Indians at 10 a.m. followed by the Yankees against regular-season champion Fisher Realty Blue Jays at 1 p.m.