In season training

The competition or in-season phase lasts for the duration of the season for one sport. This includes exhibition competitions and the playoffs. Certainly, within the season there may be some games that are more important and it may be a long 12-16+ week season. This may necessitate dividing the in season phase into smaller segments.
The goals of this phase are to peak strength and power for the best performances in games but ensure the training volume is not too high as to compromise practice and competition efforts. In this regard, it becomes more a goal of maintaining the gains made during the preseason and perhaps, making small gains in strength, power, flexibility and conditioning. Due to the time constraints of practices and games, training sessions might be limited to 1-3 per week. It is very important to ensure that there are at least 2-3 days of rest from both training and practices/games per week. This is needed to ensure there is proper rest and recovery for body to be able to continue at an optimal level of performance throughout the season. If training levels are kept at preseason levels throughout the in season phase, overtraining can occur.
Workouts through the in season phase should be focused on skill and strategy development. Exercises that emphasize speed, reaction time, and technique training are good to incorporate into workouts. Resistance training should be of a moderate intensity (80-85%RM) and moderate volume - 2-3 sets of 6-8 reps. Plyometric training that is sport specific is a good addition.
Within the in season phase, if there is the ability to divide it into chunks based on more important competitions and have a week of decreased workouts following that chunk before the next, it is good to incorporate that rest. This is very important for long in season sports.
As always, it is important to individualize programs to your sport and your body. It is also important to listen to your body and how it is feeling and performing. If the body is showing signs of overtraining - decreased performance, fatigue, general malaise - then it is important to take a step back. Often one of the easiest way to take a step back is to decrease the workouts that are away from the court/field/ice/etc. This allows the body to get the rest it needs.