Michail Antonio struck in the fifth minute of injury time as Sheffield Wednesday moved to within one point of city rivals Sheffield United in the race for automatic promotion from npower League One with a 2-1 win over Carlisle at Hillsborough.
The on-loan midfielder fired home at the death after James Berrett had cancelled out Chris Lines' opener.
Lines put the home side ahead with a scuffed finish into the bottom left-hand corner in the 26th minute after Collin could only parry Jermaine Johnson's effort.
Wednesday should have extended their advantage seven minutes before the break when Johnson broke clear down the right but the Jamaican blasted straight at Collin instead of setting up Gary Madine for a simple tap in.
Berrett levelled the contest nine minutes from time with a right-foot shot into the bottom right-hand corner from the edge of the area before Antonio cut in from the left to lash the ball past Collin.