Training often takes a back seat once the season begins. This is a huge mistake and a quick way to lose any gains you made in your off-season program. Not only should you lift to maintain, you should be looking to improve as the season goes on. However, soreness is never a good thing during the season. Eric Cressey just wrote a great post on some great lifts to use in-season to limit soreness. These lifts limit eccentric stress which is more likely to cause soreness. One note is to make sure these exercises are included in your off-season training as the season is not a time to add new exercises as that also is a recipe for soreness.