Training in Baseball.
What position is he playing? If a pitcher, we used to do all sorts of lower back and leg workouts. High reps or coarse.
Alot of stretching as you want to maintain flexibility.
alot of Wrist curls as well. (this would be very benifitial to hitters for improving bat speed)
They also had us hold a dumbell in our hand and go through the pitching/throwing motion.
I loved doing this, however, once basball was over for me I was\am left with a very unsymetric back. My throwing side(left Lat.) is noticably larger. I've been trying to gain symetry for 5-6 yrs. now.
Basically, the daily workout would consist of circuit training with only 30-60sec. between sets moving between each exercise.(bench, shoulder press,rows, etc.) Then moving on to the more specialized exercises like mentioned above.