Sophie Tolchard, Ruth Rogers and Natalie Melmore - the reigning champions - remain on course to defend the Bowls England National Triples Championship, sponsored by Wessex Leisure Homes, after progressing through two rounds at Royal Leamington Spa today.But the trio from Kings BC in Devon were pushed all the way by Derbyshire's Jean Baker, Karen Chapman and Pat Oliver in the second round this afternoon - Melmore making shot on the final end to secure a 20-19 victory.They will now face Xandi Manning, Valerie Jackson and Lynn Donovan from Purley Ladies BC, Surrey, in the third round tomorrow morning at 9am.Results:1st Round:Totland Bay BC, Isle of Wight (D Gossling) bt Jacksdale BC, Notts (I Wright) 18-9;Baldock BC, Herts (S Page) bt Tiptree Jobserve BC, Essex (J Bohannon) 21-18; Houghton Dairy Lane, Durham (Joan Rodgerson) bt Eastnor BC, Hereford (V Pedlingham) 21-7;Workington BC, Cumbria (B Hamill) bt Greenhill BC, Dorset (M Ridd) 20-19; Didcot BC, Berks (J Porter) bt Eaton Socon Ladies BC, Beds (D Briars) 22-6;Egham BC, Surrey (P Garden) bt Banbury Borough BC, Oxon (A Ives) 22-12; Ilkeston Rutland BC, Derbys (C Wealthall) bt Crediton BC, Devon (J Martin) 14-12;Caer Glow BC, Glos (P Gunn) bt Clevedon Promenade LBC (M Dyer) 20-10;Princes Risborough BC, Bucks (V Room) bt Sele Farm BC, Herts (J Lonergan) 18-12;Consett Park BC, Durham (G Jones) bt St Lawrence BC, Norfolk (L Quibell) 22-12;Broomfield BC, Middx (M Lawford) bt Dunstable Town BC, Beds (J Bagshaw) 17-12; St Neots BC, Cambs (J Pell) bt Probus BC, Cornwall (M Johnson) 20-14; Brimfield & Little Hereford BC, Hereford (J Cole) bt Peterborough Conservative BC, Hunts (S Craig) 24-11;Clevedon BC, Somerset (S Branfield) bt Bexhill BC, Sussex (L Kemp) 22-7;Ipswich & District BC, Suffolk (A Lyas) bt Bournville BC, Warks (S Smith) 23-7;Broadway BC, Worcs (Y Hopkins) bt Shipton BC, Yorks (J Abel) 17-13;Wigton BC, Cumbria (N Bowe) bt Burradon BC, N'land (N Craig) 18-16;Banbury Central BC, Oxon (C Campion) bt Lee-on-Solent BC, Hants (M Whetton) 23-6; Bolton BC, Lancs (J Cropper) bt Boultham Park BC, Lincs (L Mountain) 13-12; Sheerness St George's BC, Kent (A Banes) bt North Wilts BC, Wilts (F Mace) 26-9; Kings BC, Devon (N Melmore) bt Wotton-under-Edge BC, Glos (C Winter-Alsop) 20-13; Junction LBC, Derbys (P Oliver) bt Caversham BC, Berks (J Back) 15-13;Purley Ladies BC, Surrey (L Donovan) bt Shepshed Town BC, Leics (L Green) 19-9;Higham Ferrers BC, Northants (V Gaudyn) bt Newark Northern BC, Notts (M Gardner) 16-14;2nd Round:Bush Hill Park BC, Middx (C Dennison) bt St Neots BC, Cambs (E Falkner) 15-7;Homefield Park BC, Sussex (A Truran) bt Daventry Town BC, Northants (J Bradley) 24-11;Rugby Thornfield BC, Warks (M Edwards) bt Hook BC, Hants (M Sadler) 13-12;Kings BC, Kent (V Aldridge) bt Alderbury BC, Wilts (M Woolley) 29-2;Totland Bay BC, Isle of Wight (D Gossling) bt Baldock BC, Herts (S Page) 18-17;Workington BC, Cumbria (B Hamill) bt Houghton Dairy Lane, Durham (Joan Rodgerson) 16-14;Didcot BC, Berks (J Porter) bt Egham BC, Surrey (P Garden) 18-13;Ilkeston Rutland BC, Derbys (C Wealthall) bt Caer Glow BC, Glos (P Gunn) 20-15;Consett Park BC, Durham (G Jones) bt Princes Risborough BC, Bucks (V Room) 16-11;St Neots BC, Cambs (J Pell) bt Broomfield BC, Middx (M Lawford) 23-17;Clevedon BC, Somerset (S Branfield) bt Brimfield & Little Hereford BC, Hereford (J Cole) 17-15;Broadway BC, Worcs (Y Hopkins) bt Ipswich & District BC, Suffolk (A Lyas) 18-17;Banbury Central BC, Oxon (C Campion) bt Wigton BC, Cumbria (N Bowe) 16-12;Sheerness St George's BC, Kent (A Banes) bt Bolton BC, Lancs (J Cropper) 22-14;Kings BC, Devon (N Melmore) bt Junction LBC, Derbys (P Oliver) 20-19;Purley Ladies BC, Surrey (L Donovan) bt Higham Ferrers BC, Northants (V Gaudyn) 18-12;