Complex sentence: Whilst at Richmond Teasdale played mainly in the Under 19s, where he was one of the leading goalkickers, and Reserves side: but the move to the Swans in 1975 saw him establish himself as a senior player.
Split into simpler sentences: Whilst at Richmond Teasdale played mainly in the under 19s, where he was one of the leading goalkickers, and reserves side. But the move to the Swans in 1975 saw him establish himself as a senior player.