Luis Reece claimed four as 20 wickets fell on the first day of the Specsavers County Championship match against Worcestershire at Kidderminster.
Charlie Morris (4-26) took four wickets, while there were three for Joe Leach as Derbyshire were dismissed for 108, despite 31 runs apiece from Reece and Fynn Hudson-Prentice.
Reece took 4-30, and Hudson-Prentice claimed 3-27 as Derbyshire dismissed the hosts for 113, meaning that the visitors began their second innings of the match before the close of play on Day One.
Derbyshire will resume on Day Two with Reece not out on 12 and Billy Godleman unbeaten on seven, leading by 14 runs.
The pair first went out to the middle after Derbyshire won the toss, but Godleman soon fell to Dillon Pennington, caught by Callum Ferguson for eight.
Wayne Madsen returned to the side after a brief absence through injury, but he could only make 11 and as Tom Lace came and went for one, Derbyshire went into the first interval 63-3.
Reece could not add to his pre-interval total of 31 when he fell to the first ball after lunch, with Harvey Hosein (0) lbw later in the over.
Matt Critchley could not get off the mark before he was caught by Daryl Mitchell to give Leach his third wicket of the innings, which brought Hudson-Prentice out to the middle.
The all-rounder began his innings positively to put on 20 runs with Leus du Plooy before the latter was caught by Wessels off Morris for 14, with Anuj Dal being caught by Mitchell in the same over.
Hudson-Prentice continued to score quickly and smashed six fours and one six before being caught by Cox off Morris for a joint-top-score of 31, coming in 27 deliveries.
The dismissal of Ravi Rampaul by Barnard brought Derbyshire’s innings to a close on 108.
The West Indies quick got the reply with the ball off to the perfect start, having Dell caught behind by Hosein without troubling the scorers, while Palladino had the experienced Ferguson (13) caught by du Plooy to claim his first wicket of the match.
Reece then struck for the first time in the innings to trap Mitchell lbw for 13, while Hudson-Prentice claimed the wicket of Wessels via the same mode of dismissal, also for 13, to leave the hosts 46-4 at tea.
After the interval, Reece claimed his second wicket of the innings when he had Ross Whiteley caught behind by Hosein for five, while he took his third soon after, Cox lbw for four.
Rampaul had Brett D’Oliveira caught by Wayne Madsen for four, before Reece took his fourth wicket after Barnard was caught by Dal for 17, the second-highest-score in the Worcestershire.
That score was beaten by Pennington, who scored 18 and helped the hosts to take a first innings lead before he was lbw to Hudson-Prentice for 18. The same bowler had Leach (14) caught by Madsen to end the Worcestershire innings on 113.
Godleman and Reece saw out the final seven overs of the day to close on 19-0, with a lead of 14 runs to take into Day Two.
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