If Jade Dernbach is finding the switch from Twenty20 to the four-day format a difficult one it certainly doesn't show.

After a five-day break recovering from a gruelling T20 Cup schedule at the end of last month, the South African (left) returned to four day action taking 6 for 82 in Glamorgan's first innings of the rain-affected draw at the SWALEC Stadium.

But despite his haul, the paceman, 23, says reverting his mindset to the more conventional county format is not necessarily a formality.

"In Twenty20 you bowl so little that you can bowl yourself out of nick," said Dernbach.

"When the change around comes so quickly it can be difficult to adapt mentally.

"The Twenty20 Cup is such a gruelling schedule and completely different to the four day game.

"You can start a T20 game at 2pm or 6pm and then you are back out on the road to the next game – it's tough."

Nevertheless, Dernbach admits he was happy with his spell against Glamorgan.

"I'm very happy with the way it went. It was good to get back to the four-day version of the game. It was good to get some overs under my belt and take some wickets.

"I was delighted with my performance, it just clicked and it worked for me – it couldn't have gone any better."

After a long-running battle with a knee injury, former England star Mark Butcher returned to first-class action with a superb 65 and an unbeaten 27 in Cardiff.

And a third wicket stand of 98 with fellow veteran Mark Ramprakash ignited memories of vintage days gone by.

And Dernbach admits watching the duo roll back the years was a sight for sore eyes.

He said: "It's great to have Butch back. He has so much experience and knowledge of the game and passes that onto us when we are playing.

"Being sidelined has been difficult for him but it's superb for all of us that he is back.

"We've not been as successful as we would have liked this season, but Butch being back on board is a big boost.

"For us bowlers watching Butch and Ramps put on a knock like they did is brilliant.

"Ramps is in the form of his life at the moment."

The Glamorgan match saw Australian pace bowler Ryan Harris, 29, make his debut as overseas player. He joins for three games, replacing New Zealander Grant Elliott.