Robert Dunlop Sinclair (29 June 1915 – 2 July 1993) was a Scottish professional footballer who played in the Scottish First Division for Falkirk in the 1930s and in the Football League in England for Darlington in the years following the Second World War.
[1] As a youngster, he was on the books of Heart of Midlothian, but never played in competitive first-team football for the club.
[5] He made what the Scotsman described as "quite a promising debut" in the Scottish Cup defeat of St Mirren on 12 February,[3] and in the absence of several regular players through injury, made his Scottish First Division debut the following week, in a 2–0 home defeat to Motherwell.
[8] At the end of the 1938–39 season, Falkirk intended to retain Sinclair,[9] but they accepted a £475 offer for his services from English Second Division club Chesterfield,[10] and Sinclair became one of twelve new arrivals ahead of the 1939–40 season.
[11] He played in Chesterfield's first two matches before the Football League was abandoned for the duration of the Second World War, and played for the club in wartime competitions[10] (he also guested for Plymouth Argyle[12]) and in the 1945–46 FA Cup,[2] but moved on to Third Division North club Darlington during the 1946 close season.