Both were prominent in the early stages when the Seagulls' smart play indicated a hard afternoon for the home club.
Ward, signed a couple of days ago from Wolves on a season's loan, was involved in setting up several promising attacks which put Birmingham's reconstructed defence under pressure.
But Agustien was the player who created the breakthrough in the 73rd minute. He put a pass into the path of Crofts who scored with a low measured cross shot to the right of Randolph.
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Helen Plint has the forecast for tonight and tomorrow in the west of the region.
Helen Plint has the forecast for tonight and tomorrow in east of region.
Helen Plint has the lunchtime forecast for the west of the region.