Warwickshire 24 for 2 trail Glamorgan 220 (Poysden 5-29) by 196 runs
A career-best five for 29 from Warwickshire leg-spinner Josh Poysden continued Glamorgan's batting struggles on the opening day of their Specsavers County Championship match at Edgbaston.
The Welsh county chose to bat, aiming to at least double their haul of just three batting points collected from the first four games. But they added just one more as, on a slow pitch, they were bowled out for 220 after Poysden, playing his first championship game of the season, dismantled the lower order.
Poysden said: "It has been a really frustrating time for me, not being in the team at the start of this year and for most of last year. I didn't play as much as I wanted to, especially in the championship last year, and with us getting relegated it hurt not to be able to contribute.
"But I went away in the winter and worked hard with Stuart MacGill again and then, after I came back, have worked hard with the coaches here at Edgbaston."
Australia Test star Usman Khawaja made just four on his debut and, though David Lloyd, Owen Morgan and Chris Cooke all got decent starts, no-one built the big innings required.
The total looks well under par, although Glamorgan fought back well in the last session, removing both Warwickshire openers to leave the home side on 24 for 2 at the close.
After Chris Cooke, captaining Glamorgan for the first time, won the toss, young openers Nick Selman and Jack Murphy added 44 in 14 overs. They were parted by Henry Brookes when Murphy was adjudged lbw by Indian umpire Yeshwant Barde, officiating in the first match of his exchange trip.
Connor Brown then edged Chris Wright behind and Selman (30, 74 balls, four fours) bat-padded Jeetan Patel to short leg.
Khawaja's uncomfortable, 47-minute stay was ended by a Keith Barker inswinger and Barker should have immediately also dismissed Cooke, who was dropped on nought by Dominic Sibley at second slip. The captain survived to add 57 in 15 overs with Morgan before misreading Poysden's first ball and falling lbw.
Poysden struck again in each of his first two overs after tea when Morgan was lbw and Andrew Salter clipped to short mid-wicket. Lloyd, having batted forcefully to pass 2,000 first-class runs in his 50th match, then departed deeply unimpressed with the decision that he had edged a ball from Patel on to pad before Tim Ambrose reached forward to catch it.
Ruaidhri Smith became the fifth lbw casualty when he missed a sweep at Poysden who bowled Lukas Carey first ball to complete his five-for. Glamorgan hit back hard when the home side replied as Carey rattled Will Rhodes' stumps with the first ball of the innings and Timm Van der Gugten castled Sibley with the 56th.
Both sides are depleted in the seam-bowling department with Warwickshire's Olly Stone and Ryan Sidebottom ruled out by side strains and Glamorgan missing captain Michael Hogan and Marchant de Lange due to hamstring injuries.