Background
He was born in Rangiora, Canterbury, and educated at Rangiora High School.
He was born in Rangiora, Canterbury, and educated at Rangiora High School.
An off-spinner and useful tail-end batsman, Sinclair made his debut for Canterbury in the 1953-1954 season when Matt Poore was in South Africa with the New Zealand team His performances were moderate (108 runs at 1542 and 10 wickets at 4170 in five matches) and he did not appear in 1954-1955. When Poore was away again in 1955-1956, this time touring India and Pakistan, and Tom Burtt retired, Sinclair became Canterbury"s leading spin bowler.
He took 5 for 57 and 2 for 26 in the first match of the Plunket Shield season against Otago, 1 for 50 and 4 for 17 as well as his highest score of 40 in the next match against Auckland, 4 for 36 and 0 for 74 against Wellington, and 5 for 65 and 1 for 73 against Central Districts.
He took 4 for 73 for Canterbury against the touring West Indians, and was selected in the team for the Second and Third Tests. However, he took only one wicket (of Everton Weekes), New Zealand lost both matches, and he never played another Test.
He played three matches for Canterbury in 1956-1957 but took only four wickets. He also played for Canterbury Country in the Hawke Cup competition.