DERBYSHIRE have suffered a big new injury blow after batsman Wayne Madsen was ruled out until early August.Madsen suffered a hamstring injury against Lancashire on June 9.He had initially been expected to be missing for up to six weeks but after a fresh scan is now facing at least eight weeks out.Alex Hughes, who has a side strain, and Dustin Melton (heel) are long-term casualties.Tom Wood, Ben Aitchison, Nick Potts, Sam Conners, Anuj Dal and Nils Priestley are also on the casualty list.

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