Worcestershire finished Day 1 the happier of the two sides at 309/3, after Brett D'Oliveira (123*) and Jake Libby (142*) put on an impressive 239 over the course of the afternoon and evening sessions.
Michael Hogan had taken three early wickets to move him to 599 first-class wickets, and Glamorgan's assistant coach David Harrison praised the Australian seamer for his consistent excellence over the day, and the years.
"It was a fantastic effort from Michael Hogan, he's been a high-class bowler since he's joined Glamorgan and has led the attack brilliantly for the last seven or eight years. Hopefully he'll come back in the morning and get his 600th first-class wicket."
After the early breakthroughs, the Worcestershire batsman found an easy-paced pitch and sunny weather to their liking, and Harrison praised his bowlers for their effort that went unrewarded, and believes his side can do something similar in the morning before having a chance to bat on a good wicket.
"We stuck to it on a different style of pitch to the one we had at Taunton. The boys bowled well through the day but we had them three down and then missed a chance to make it 70-odd for four. Fair play to Libby and D'Oliveira, they batted really well but I can't fault the boys' efforts on a good wicket.
"It's a little bit different with the restriction to 120 overs. Hopefully we can get a couple of wickets early and stop the run rate, then it's a good wicket for us to bat on."