Mason Crane scored a career best 31 runs in List A matches.
Mason bettered his previous highest score (28) for Hampshire in the Metro Bank One Day Cup.
His 31 runs (2 sixes, 1 four) came off 41 balls to help Hampshire post 254 against Nottinghamshire.
Mason then contributed to a comfortable 91 run win by taking 3-38 off 8.2 overs.
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