He staked a real claim in the first team during the 2014 season where he was named the Player of the Year, alongside the Players’ Player of the Year and the Batter of the Year. Westley recorded centuries in each format (The 5th Essex player reach the milestone), including his maiden 100 in Twenty20 cricket, when he smashed 105 against Kent at Colchester. He followed it up with 109 against Sussex at Chelmsford.
In 2015, Westley became the first player to hit two hundreds in each of the three formats for Essex.
His fantastic year was rewarded with a call-up to the England Performance programme trip over the winter to Sri Lanka and scored 100 for the Lions against South Africa in 2017, as Essex also won a first County Championship title in 25 years.
Westley shone in all three formats during the 2019 season to help the Club clinch the Specsavers County Championship and Vitality Blast trophies. His knock of 141 against Warwickshire in the Championship was his standout performance of the season, which secured a vital draw at Edgbaston.
At the start of 2020, Westley was appointed Club Captain after Ryan ten Doeschate stepped down from the role, which started with him leading the team to an inaugural Bob Willis Trophy win after overcoming Somerset at Lord’s, in which he scored a half-century in a 170-run partnership with Alastair Cook.
The club captain continued to be Essex’s stalwart at the No.3 in all formats. In 2021, Westley scored a determined 213 against Worcestershire in April, taking him to 3rd in the list of players with the most double centuries for Essex.