James Vince and Liam Dawson struck half-centuries as Hampshire shaded the first day of their LV= County Championship Division Two match against Glamorgan at a sun-drenched Cardiff.
Vince made 80 while Dawson remained on 69 at the close; their partnership of 132 in 40 overs helped Hampshire to 274 for five first innings as both search for a second four-day win this season.
Glamorgan toiled in the heat on a slow pitch, Australian seamer Michael Hogan the pick of the bowlers with 2-44 from his 23 overs – a key factor in keeping the Hampshire rate below three runs an over.
Despite losing Vince in the evening session, the patient Dawson showed determination in batting for four hours and 13 minutes for his contribution.
After winning an important toss on a batsman-friendly wicket, Hampshire cruised to 80 for one in the opening session.
Openers Michael Carberry and Jimmy Adams produced a stand of 76 before slow left-armer Dean Cosker struck three overs before lunch.
Carberry made a patient 31 from 95 balls with five fours, only to be caught at mid-on by Stewart Walters.
After lunch Hampshire suffered two further setbacks as temperatures soared. Three short of a half-century, visiting captain Adams edged Will Owen to Walters at second slip.
And 93 for two became 118 for three when South African Neil McKenzie was bowled by Hogan, who registered the first bowling point for Glamorgan. The two wickets fell in the space of 7.3 overs.
Hampshire's post-lunch setbacks were overcome as fourth-wicket pair Vince, who drove well, and Dawson reached tea both 41 not out with their side 183 for three.
In the evening session Vince and Dawson completed their half-centuries but the second new ball saw Glamorgan launch a mini-fightback.
Just after the visitors secured a second batting point, Hogan claimed his second wicket of the day to trap Vince in front.
Three overs later, Sean Ervine was caught by Walters at second slip without scoring after edging Jim Allenby.
Dawson and Adam Wheater survived any further scares to take Hampshire to stumps in a solid position.