 After signing a contract extension in August 2016, Denly further improved his first-class high score on 21 May 2017 when he made 227 in the second innings of a Championship match against Worcestershire.His innings put Kent on course for victory, but Worcestershire successfully chased a target of 399 the following day.The 2018 domestic season saw Denly lead the MVP rankings in the Royal London Cup and T20 Blast and win the overall MVP award.