In the night's League One game, Chesterfield moved into sixth place in the table, with a 1-0 win at Bradford City.
At Valley Parade, Chesterfield, managed by former Sky Blues Paul Cook, took a 45th minute lead with a Byron Harrison shot from a Richie Humphrey pass.
With no goals in the second half, Chesterfield took the win and move into sixth in the table, with 57 points, eleven more than Coventry City.
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