Narrowest Margin of defeat by Glamorgan in List A cricket

1 run v Essex at Swansea, 1969 (SL); v Surrey at Byfleet, 1971 (SL); v Derbyshire at Buxton, 1973 (SL); v Hampshire at Bournemouth, 1983 (SL); v Hampshire at Sophia Gardens, Cardiff, 1984 (SL); v Derbyshire at Cheadle, 1987 (SL)
v Somerset at Taunton, 2021 (RLC)

Scores level v Somerset at Sophia Gardens, Cardiff, 1978 (SL)

1 wicket v Somerset at Taunton, 1973 (SL); v Essex at Chelmsford, 1997 (NWT); v Kent at Sophia Gardens, Cardiff, 2004 (NL)