For Glamorgan

1st wicket – 246 MTG Elliott and K Newell v Dorset at Bournemouth, 2000 (NWT)
2nd wicket – 204 SP James and A Dale v Lincolnshire at Swansea, 1994 (NWT)
3rd wicket – 259* H Morris and MP Maynard v Durham at Darlington, 1991 (NWT)
4th wicket – 245 SA Northeast and WT Root v Worcestershire at Worcester, 2022 (RLC)
5th wicket – 135 BJ Wright and JWM Dalrymple v Derbyshire at Sophia Gardens, 2009 (FPT)
6th wicket – 186 CA Ingram and TN Cullen v Kent at Sophia Gardens, 2022 (RLC)
7th wicket – 117 Javed Miandad and EW Jones v Combined Univs at Fenner’s, 1983
8th wicket – 113* WT Root and M de Lange v Surrey at Sophia Gardens, 2019 (RLODC)
9th wicket – 87 MA Nash and AE Cordle v Lincolnshire at Swansea, 1974 (GC)
10th wicket – 45 MJ Powell and OT Powell v Somerset at Sophia Gardens, 2002 (NL)

Against Glamorgan

1st wicket – 286 IJ Ward and AD Brown for Surrey at The Oval, 2002 (C&G)
2nd wicket – 203 PN Weekes and MW Gatting for Middlesex at Lord`s, 1996 (SL) and FIN Khushi and T Westley for Essex at Chelmsford, 2022 (RLC)
3rd wicket – 223 SJ Cook and GD Rose for Somerset at Neath, 1990 (SL)
4th wicket – 221 JM Vince and LA Dawson for Hampshire at Ageas Bowl, 2017 (RLC)
5th wicket – 133 MN Lathwell and RJ Harden for Somerset at Taunton, 1997 (B&H) and NJ O’Brien and MA Thornely for Leicestershire at Swansea, 2013 (NL)
6th wicket – 131 AD Mascarenhas and N Pothas for Hampshire at Swansea, 2007 (FPT)
7th wicket – 107 AP Wells and NJ Lenham for Sussex at Hove, 1993 (NWT) and J Clark and SC Meaker for Surrey at Sophia Gardens, 2019 (RLODC)
8th wicket – 84 JA Tattersall and MJ Waite for Yorkshire at Sophia Gardens, 2021 (RLODC)
9th wicket – 82 JMR Taylor and DA Payne for Gloucestershire at Bristol, 2019 (RLODC)
10th wicket – 64 RJ Blakey and RJ Sidebottom for Yorkshire at Headingley, 2002 (NL)