FIRST division high-fliers Bagby & Balk survived a Newitts.com Beckett League Gordon Harrison Memorial Trophy shock at Pickering Knights.
The hosts went ahead twice, initially taking the lead with a third-minute free kick.
Dom Rayner levelled the scores from James Clark's left-wing corner but Knights forged back in front before the interval.
Man-of-the-match Rayner, playing in the centre of midfield, went on to complete his first hat-trick of the season after the break either side of an Olly Brooks effort.
Luke McLaren and man-of-the-match Jake Dennison saw Wombleton Wanderers progress at the expense of Brooklyn thirds.
Second division Heslerton pushed top-flight Sinnington all the way but Jay Bryan's goal only proved a consolation after earlier strikes from Paul Harland and Toby Edwards.
Bryan also saw a chip cleared off the line after lifting his shot over impressive young Sinners shot-stopper Kristian Nicholson.
His counterpart Mick Norman was also in outstanding form, while Rob Atkinson impressed most for Sinnington.
Man-of-the-match Scott Simpson's hat-trick for Slingsby shot down Union Rovers reserves in a 3-2 triumph - his third an unstoppable, 20-yard, left-footed drive into the top corner.
Declan Copeland and Phil Smith reduced the deficit and centre-back Martin Benson shone in defeat.
A double-strike by Wayne Pilmoor, after 16-year-old, man-of-the-match Rob Green had opened the scoring with his first senior goal, saw Heslerton overcome Gillamoor 3-1.
Tom Skelton - Gillamoor's star man - responded with a brilliant header.
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