Barnsley and Birmingham City have gone in level at the break thanks to Jonathan Greening immediately levelling Curtis Davies's opener.
Barnsley had an early chance as Jim O'Brien was well-placed to shoot, but his effort was blocked by Davies.
Stephen Dawson got on the end of a cross after 15 minutes and struck a volley, but it was well saved by Jack Butland.
The young goalkeeper was forced into an even better stop 10 minutes later as he dived to tip wide a Marcus Tudgay header.
However, despite Barnsley's chances the opening goal went to Birmingham. They won a series of corners and Davies thumped a header into the back of the net.
However, just a minute later Barnsley went up the other end and levelled through a thumping drive from Greening.