Sharp finished runner-up to Bob Greenbury at last Wednesday’s qualifier, but his haul of 79lb 1oz from canal peg 11 was enough to send him through with Bob (85lb) already through.
With the top three already having booked their final berths, fourth place was enough for Jackson at Saturday’s match.
He caught 57lb 1oz from peg 15 on the canal, while winner Ken Daws won with 76lb 8oz from golden peg 19 to net a £160 bonus.
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Melton secure Division One league title after win over Syston Northfields
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Melton Town off to a winning start while Holbrook Sports battle back for a draw
Results (top five) - Wednesday: 1 Bob Greenbury (Drennan) 85lb (canal peg 3), 2 Ben Sharp (Preston Innovations/Black Coarse) 79lb 1oz (peg 11), 3 Brian Greenbury (Dynamite) 78lb 8oz (peg 7), 4 Sean Huggins (Drennan/Dynamite) 62lb 4oz (peg 25), 5 Steve Haywood (Middy) 60lb 13oz (peg 9).
Saturday: 1 Ken Daws (Sensas) 76lb 8oz (canal peg 19), 2 Brian Greenbury (Dynamite) 67lb 10oz (peg 21), 3 Steve Haywood (Middy) 65lb 4oz (peg 6), 4 Doug Jackson 57lb 1oz (peg 15), 5 Jim Aley (AMSOA) 56lb 4oz (peg 17).
Sunday Open: 1 Daz Sly 100lb 9oz (river peg 12), 2 Keith Daws (LVS) 95lb 6oz (river 18), 3 Chris Neal (Rutlander) 95lb 2oz (river 15), 4 Brian Greenbury (Dynamite) 90lb 2oz (canal 8), 5 Tom Neal (Rutlander) 81lb 4oz (canal 10).