The opener scored 82 off 41 balls in a four-wicket win at Southampton.
Injury to his team-mate has given another Kent player a chance to impress.
Willey took five wickets in Thursday’s victory over Ireland in the first ODI.
Ireland meet Eoin Morgan’s men in the first of three one-day internationals on Thursday at Southampton.
The tournament is scheduled to take place in Australia between October 18-November 15.