He was given a benefit match in 1919, with the Cardiff side playing against local rivals Swansea Town. Latham received the gate receipts, a cheque from the club's directors and a commemorative clock from the players. While serving as a coach, Latham was forced into playing for the side in a 3–1 win over Blackburn Rovers on 2 January 1921 after two of the club's players were taken ill prior to the match, becoming the oldest Football League debutant in the history of the club at 41. To this day he also remains their oldest ever player. Working alongside Fred Stewart, his spell at Ninian Park coincided with one of the most successful spells in the history of the club, including reaching the FA Cup final on two occasions, losing 1–0 to Sheffield United in 1925 before beating Arsenal 1–0 in 1927. During his spell with the club, Latham arranged annual charity matches in his hometown between Cardiff and Newtown to rise money for the Montgomery County Infirmary.