By Glamorgan

227.3 v Northamptonshire at Sophia Gardens, Cardiff, 2019
203 v Essex at Sophia Gardens, Cardiff, 2000
196 v Surrey at The Oval, 2021
194 v Middlesex at Sophia Gardens, Cardiff, 1993
191.3 v Surrey at Sophia Gardens, Cardiff, 2001
177 v Middlesex at Cardiff Arms Park, 1932
176 v Warwickshire at Edgbaston, 1994
173.5 v Northamptonshire at Northampton, 1998
171 v South Africans at Cardiff Arms Park, 1947
170 v Northamptonshire at SWALEC Stadium, 2012
168.3 v Middlesex at Lord’s, 1931
168 v Gloucestershire at Bristol (Packers), 1928
167 v Essex at Chelmsford, 2007
166 v Worcestershire at Sophia Gardens, Cardiff, 1991 and v Durham at Sophia Gardens, Cardiff, 1992
165.1 v Somerset at Taunton, 1993
164.5 v Yorkshire at Scarborough, 2001
164.2 v Somerset at Swansea, 1994

Against Glamorgan

207.5 by Sussex at Hove, 2023

196* by Somerset at Rodney Parade, Newport, 1939 (NB 147 eight ball overs)
188 by Essex at Swansea, 1928
187 by Nottinghamshire at Colwyn Bay, 1999
181 by Nottinghamshire at Trent Bridge, 1949
178.1 by West Indians at Cardiff Arms Park, 1933
177 by Surrey at The Oval, 2021
176.2 by Leicestershire at Colwyn Bay, 2009
176 by Cambridge University at Cardiff Arms Park, 1934
174 by Kent at Rodney Parade, Newport, 1947