Glamorgan's Mark Cosgrove carried on where he left off last week as he proved the main performer on a rain-ruined first day at Sophia Gardens.
After marking his return with a century against Middlesex at Lord's, the Aussie this time hit a painstaking 37 against Derbyshire out of Glamorgan's 79-2.
But the Cardiff rain limited play to just 38 of the 96 overs due in the day.
Graham Wagg was Derbyshire's best bowler, taking both the wickets to fall in 15 economical overs for just 25.
The fact that only 38 overs were possible was frustrating not only for spectators and players but the Glamorgan groundstaff, who were being scrutinised ahead of the first Ashes Test between England and Australia starting on 8 July.
Around £3million worth of improvements have been made over the winter, including £600,000 worth of drainage works and £150,000 of new covering.
But only 12 overs were possible during the first two sessions because of two torrential downpours which gave that new drainage system a thorough test.
The first rain came just after noon by which time Glamorgan had lost their first wicket, Gareth Rees pulling a Graham Wagg long hop straight to Dan Redfern at square leg.
Play was then due to resume after tea at a quarter to five, but that was delayed a further 15 minutes because the groundstaff had problems getting the new cover off the square.
That meant a further four overs taken off the 30 that had been scheduled for the final 75 minutes, and would have caused Glamorgan chairman Paul Russell and county officials some embarrassment, especially with the Ashes Series opener only 10 weeks away.
After play eventually resumed Ben Wright battled through 10 overs before edging Wagg to Mark Lawson at second slip to leave the home side 38-2. But Cosgrove and Michael Powell (16) guided Glamorgan to the close without any further scares.
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