Essex opener Varun Chopra hits his one-day best 160 to help beat Somerset comfortably at Chelmsford.
Paul Stirling hits his second century in six days as Middlesex beat Sussex by 74 runs at Hove in the One-Day Cup.
Kent captain Joe Denly hits 150 not out and claims four wickets as Kent beat Glamorgan in the One-Day Cup.
Derbyshire beat Leicestershire by five runs after a thrilling finish to a rain-affected One-Day Cup contest.
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Glamorgan chief executive Hugh Morris says the addition of Australian Usman Khawaja will be a be boost for the T20 Blast.
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How to get into cricket
How to get into cricket - physical exertion with a chess-like element in matches which range from half an hour to five days.