I guess you need something like this:
const MySelect = props => (
<Select
{...props}
value = {
props.options.filter(option =>
option.label === 'Some label')
}
onChange = {value => props.input.onChange(value)}
onBlur={() => props.input.onBlur(props.input.value)}
options={props.options}
placeholder={props.placeholder}
/>
);
#EDIT 1 : In the new version
const MySelect = props => (
<Select
{...props}
options={props.options}
onChange = {value => props.input.onChange(value)}
onBlur={() => props.input.onBlur(props.input.value)}//If needed
defaultValue={props.defaultValue || 'Select'}
options={props.options}
placeholder={props.placeholder}
/>
);