Leaders Burton movede four points clear at the top of the League One table thanks to a 3-1 victory over Bradford City.
Peterborough goalkeeper Ben Alnwick nearly scored in bizarre circumstances at Chesterfield, but was denied by his opposite number.
Peterborough lost two players but won 1-0 at Chesterfield to boost their play-off chances.
Sky Bet Football League
29th May 2016