Complex sentence: He took 99 scalps in that season but batted at number 10 though as a sign of things to come he hit a valuable unbeaten 35 in a low-scoring match against Gloucestershire that impressed W.G. Grace.
Split into simpler sentences: He took 99 scalps in that season but batted at number 10. As a sign of things to come however he hit a valuable 35 not out in a low-scoring match against Gloucestershire that impressed W.G. Grace.