Complex sentence: Dilley's Test career was beginning to wind down by this time, however, the strains on his body beginning to tell, and his final match for England was at Edgbaston in the one-sided 1989 Ashes series.
Split into simpler sentences: Dilley's Test career was beginning to wind down by this time with the strains on his body beginning to tell. His final match for England was at Edgbaston in the one-sided 1989 Ashes series.