Derbyshire signed wicketkeeper-batter, Aneurin Donald, on a two-year deal from Hampshire.
Donald, 26, has scored more than 3,000 runs in first-class cricket, at an average of 31.50, including three centuries, while he also scored two centuries in the recent Metro Bank One Day Cup to fire Hampshire to the final.
The former Glamorgan batter scored the equal-fastest double-century in first-class cricket in 2016, reaching the milestone in 123 balls and smashing a huge 15 sixes against Derbyshire at Colwyn Bay.
He spent time on loan at Derbyshire during the 2023 Vitality Blast, while Brooke Guest was out with a hamstring injury, before returning to Hampshire to help them reach Finals Day.
Donald said: “I’m excited to have joined Derbyshire permanently; I know from my loan spell what a great group of players we have at the Club and the high standards demanded.
“I had a few options at other counties, but the level of coaching and the project which is happening at Derbyshire really stood out to me.
“Mickey has spoken to me about his ambition for the Club and I’m looking forward to playing a part in that journey.”