Billy Root and Luke Fletcher sign new two-year contracts with Division Two leaders Nottinghamshire.
Leicestershire beat Notts by two runs, while Somerset climb from seventh to fourth to reach the T20 Blast quarter-finals.
Nottinghamshire batsman Jake Libby signs a new contract keeping him at Trent Bridge until the end of the 2019 season.
Nottinghamshire's One Day Cup success gives them belief to win the T20 title, according to head coach Peter Moores.
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Nottinghamshire Outlaws' Riki Wessels hits a six out of the ground in the rain-affected T20 Blast match against Leicestershire.
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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.