Complex sentence: Wilson had another strong performance in 1927, once again leading the league in home runs to help drive the Cubs into first place heading into the final month of the season; but the team faltered, finishing once again in fourth place.
Split into simpler sentences: Wilson had another strong performance in 1927, once again leading the league in home runs to help drive the Cubs into first place heading into the final month of the season. However, the team faltered, finishing once again in fourth place.