For Glamorgan
410* (410*) SA Northeast v Leicestershire at Leicester (Grace Road), 2022
330* (280* and 50) RG Duckfield v Surrey at The Oval, 1936
321 (34 and 287) DE Davies v Gloucestershire at Rodney Parade, Newport, 1939
313* (313*) DL Lloyd v Derbyshire at Sophia Gardens, Cardiff, 2022
309 (309) SP James v Sussex at Colwyn Bay, 2000
299 (299) MJ Powell v Gloucestershire at Cheltenham College, 2006
292 (187* and 105) A Jones v Somerset at Glastonbury, 1963
288 (132 and 156) A Jones v Yorkshire at Middlesbrough, 1976
282 (214 and 68) MP Maynard v Lancashire at Sophia Gardens, Cardiff, 1996
Against Glamorgan
371 (309* and 62) HD Ackerman for Leicestershire at Sophia Gardens, Cardiff, 2006
367 (210 and 157) MR Hallam for Leicestershire at Leicester (Grace Road), 1959
352 (252 and 100) GA Hick for Worcestershire at Abergavenny, 1990
351 (29 and 322*) MB Loye for Northamptonshire at Northampton, 1998
336 (117 and 219) SA Newman for Surrey at The Oval, 2005