Before the start, Yorkshire confirmed that Joe Root will play three Championship matches and fellow England batter Harry Brook two games as their preparations for the Test summer.
Glamorgan gave debuts to ex-Somerset batter Sean Dickson and New South Wales paceman Ryan Hadley, while Yorkshire’s new faces are Western Australia batter Sam Whiteman, born in Doncaster, and Dutch all-rounder Van Beek. Australian paceman Jhye Richardson was not pressed into early service.
Intermittent rain, combined with a chilly wind, meant that play did not begin in grey, windy and inhospitable weather until 16:15 BST.
Asa Tribe and Eddie Byrom, a rare bespectacled pair of batters, formed a new opening partnership for Glamorgan and Byrom hit his first ball back in the team to the square-leg boundary.
But Ben Coad beat him several times before forcing him to edge to slip where Finlay Bean clung on well.
In the next over, England contender Tribe feathered White through to Bairstow for 11, and the same combination accounted for Dickson without scoring as Bairstow took a good grab in front of slip.
The chaos continued as new captain Kiran Carlson flicked White to leg slip where Dom Bess clung on to take a catch above his head.
Despite some tentative shots early on, Ingram and England Lions all-rounder Kellaway settled in to stop the slide against the change seamers, with Ingram slapping Van Beek over point for the first Glamorgan six of the season.
The half-century partnership marked the first stage in Glamorgan’s recovery before Bairstow’s early exit for treatment, with Bean taking the keeper’s gloves.
Glamorgan survived a second blast from White and a token over of spin from Bess to reach the close with some batting resources intact, although Yorkshire will be more content with their work.
