But the Dragons had enough ammunition left in the locker as Hemp (34), Dalrymple and Mark Wallace (26 not out) got the visitors home.

BBC: Dalrymple stars in Glamorgan win

An opening partnership of 147 between Gareth Rees (64) and Mark Cosgrove (85) set the tone before Jamie Dalrymple pressed home the advantage.

BBC: Dalrymple century helps Glamorgan press home advantage

The letter also points to differences of opinion with Maynard over Dalrymple's future as captain and over the role that Australian batsman Mark Cosgrove might play.

BBC: Glamorgan chief Alan Hamer defends shake-up