Dustin Melton has been signed up by Derbyshire until the end of 2020.
The 24-year-old only made his first-class debut in last week's tour match against Australia.
Melton took 0-55 with the ball but failed to score during either innings with the bat.
He has however impressed in the Second XI Championship for Derbyshire, recording best figures of 4-8 against Worcestershire in June.
“It has been a dream of mine since arriving in the country four years ago, so it is the highlight of my career to fulfil that dream and sign a professional contract with Derbyshire," said Melton, who has previously played for Essex seconds.
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