Complex sentence: Despite posting a 4.04 ERA through September 6, Wilson converted 37 of 40 save opportunites; however, he posted a 9.56 ERA in his final seven games of the year while converting just four out of seven opportunities.
Split into simpler sentences: Despite posting a 4.04 ERA through September 6, Wilson converted 37 of 40 save opportunites. In his final seven games of the year, however, he posted a 9.56 ERA while converting just four out of seven opportunities.