DAY 2 Close: Glamorgan 216 & 283-7 lead Gloucestershire 243 by 256 runs (PTS: Glam 4, Glos 4)
LIVE ball-by-ball commentary on www.gloscricketradio.co.uk
Gloucestershire will have to produce some special cricket to win this crucial county championship match from here. Mark Cosgrove's 123 helped Glamorgan to a lead that Gloucestershire simply do not know how to chase down.
The visitors built in several useful partnerships but the 99 that Cosgrove and Jamie Dalrymple added tipped the balance of power towards the Welsh county.
Jon Lewis was convinced he had Dalrymple lbw first ball after he had dismissed Ben Wright by the same method. Andy Hick's decision to turn down the raucous appeal could be a very important decision.
Gloucestershire did respond briefly. Gemaal Hussain and Steve Kirby produced double strikes after tea but Glamorgan rallied, chiefly through Mark Wallace, who brought up his second half-century of the match from 63 balls - three fewer than his first-innings effort.
Wallace looked in great touch and maneuvered the bowling around effectively before twice reverse-sweeping Vikram Banerjee - who again enjoyed a fruitless afternoon.
Robert Croft joined Wallace to begin another eight-wicket stand as Gloucestershire began dreaming of an unheard-of fourth-innings chase.
Coverage continues tomorrow on www.gloscricketradio.co.uk
Official report: www.gloscricket.co.uk