Derbyshire 450 for 8 dec (Reece 139, Guest 96, Wagstaff 78) and 68 for 0 lead Glamorgan 301 for 5 dec (Ingram 82, Zain-ul-Hassan 65, Root 53, Thomson 4-97) by 217 runs
That gave Derbyshire 25 tricky overs to face in failing light in the Welsh capital. After opening with their pace attack, Glamorgan were forced to turn to their spinners before the umpires finally had enough with five overs left to play.
At that stage Derbyshire were 68 for 0, stretching their lead in the game to 217 runs. Harry Came was unbeaten on 28 and Luis Reece was just ahead on 33 – chasing a club-record seventh innings of 50 or more .
Starting Day three with a 428-run deficit, but a full deck of batters, Glamorgan made steady progress but lost both openers before lunch. Eddie Byrom (11) was first to go, caught in the gully by Anuj Dal off Zak Chappell with the score on 45.
Ul-Hassan managed nine fours and a six in his 65 and he steered Glamorgan through the century mark and on to 130 before he departed. Colin Ingram had joined him and wafted at his first two balls and missed.
He eventually got into full flow after lunch as he notched 82 off 95 balls, including 15 boundaries, before he also fell to Thomson. He put on 85 with Ul-Hassan and then 61 with Carlson for the third wicket.
That left Glamorgan at 130 for 2 in their pursuit of Derbyshire’s 450 first-innings total. Carlson helped himself to 36 before he was bowled by Thomson’s off spin. Root and Chris Cooke then sped thing sup as they put on 64 for the fifth wicket before Root was stumped off Thomson.