Complex sentence: Though he was more consistently around the plate than he was as a minor leaguer, Simpson still averaged about four walks a game and six strikeouts per game and his ERA stayed below 3.00 for most of the season.
Split into simpler sentences: Though he was more consistently around the plate than he was as a minor leaguer, Simpson still averaged about four walks per nine innings and six strikeouts per nine innings. His ERA stayed below 3.00 for most of the season.