Coventry City U21's are now bottom of the U21's League 2 North table.
Birmingham City have gone above them on goal difference after a 2-1 win at Charlton Athletic.
The Sky Blues who have four games left have played one more game than Birmingham City and four more than Sheffield Wednesday who are ninth place with 27 points, one more than City.
Nottingham Forest 2-3 Hull City
Brentford 4-2 Barnsley
Charlton Athletic 1-2 Birmingham City
Millwall 1-0 Bristol City
Sheffield Wednesday 1-0 Huddersfield Town