Clubs share the honours in joint show.
Abdul Arshad, female debutant Louise Wilson, James Kilvington and Sam Reeve made it four wins from six for Natural Progression.
Michael Webster, Paul Wood and Callum Dunn were victorious for South Bank.
Results: A Arshad (Nat Progression) WPTSUN A Comby (Spennymoor); M Jones (S Bank) LRSC2 D Newall (Houghton & District); A Mackintosh (Nat Progression) LPTSUN S Emmerson (Mainsforth); R Rehman (South Bank) LRSC1 G Dodds (Cruddas Park); S Khan (Nat Progression) LPTSM S Francis (Birtley); L Wilson (Nat Progression) WPTSUN N Meinke (Westway); S Conley (S Bank) LDISQ3 A Hubery (Shildon); S Reeve (Nat Progression) WRSC2 M Robson (Westway); M Webster (S Bank) WPTSUN J Bell (Cruddas Park); J McElvaney (S Bank) LPTSUN C Husband (Houghton & District); P Wood (S Bank) WRET2 D Cook (S Bank); M Ahmed (S Bank) LPTSUN A Dube (M'brough ABC); C Dunn (South Bank) WPTSUN D.Brady (Ryton); J Kilvington (Nat Progression) WPTSM B Robinson (S Bank); M Waqas (S Bank) LPTSUN J Spragg (Spennymoor); J Hunt (S Bank) LPTSM K Leather (Wellington). REDCAR'S Jake McBride and Wellington ABC pair Daniel Ferguson and James Thompson were Teesside's three winners out of eight on Horden's show at the Wingate Consitutional Club.
Results: Daniel Ferguson (Wellington) WPTSUN Jamie Patterson (South Durham); Jake McBride (Redcar) WPTSM Nathan McGary (Doncaster Plant); Jordan Ellison (Horden) WPTSUN Jordan Rookes (Middlesbrough); Jordan Garbutt (Redcar) LRSC3 Daniel Clark (Tunnel Club); Tim Makhetho (Middlesbrough) LRSC1 John Mcdonagh (Northside); Sean McBride (Redcar) LPTSM Callum Cooke (Northside); James Thompson (Wellington) WPTSM Kieran Gething (Horden); Kyle Soakell (Horden) WPTSUN Aaron Sergeant (East Middlesbrough).
BRAMBLES Farm ABC's Curtis Cartman won his schoolboy debut at the Marriott Hotel in Sunderland, beating Lambton Street's James Cliff on unanimous points.
Richie Cosgrove's club hold their own show at the RAOB Club, otherwise known as the Buffs, in central Middlesbrough next Monday, May 17.
Boxing starts around 8pm, tickets on the door are pounds 12.