Dominic Cork, the former Derbyshire and England fast bowler, has been named as Derbyshire's head coach for the 2019 T20 Blast season.
Cork, 47, has been the club's T20 bowling coach since 2017, and now takes over from John Wright.
Cork spent 13 years of his career at Derby, where he was latterly captain, and went on to win the T20 Blast with Hampshire when they beat Somerset in the 2010 final.
"The opportunity was too good to miss and I'm delighted to be back," Cork said.
"The club is dear to my heart - it's where I started my career - and I've been grateful to work alongside John Wright in the last two years as the team has progressed.
"We've got players here who can win Twenty20 games and we've already upset the odds on a number of occasions."