quote:“what do you recommend for position players”
This all depends on their biological age the amount and timing of the training stress that is appropriate.
Kids that are biologically 16 and younger should be performing aggressive field agility, glove field motor skills and throwing motor skills with light resistance overload training for no more than 120 consecutive days in the late fall and winter leading up to spring then maintain at ½ the weight and reps during competitive season.
Throw interval overload “sport specific” training should be performed with no more than 6 lb wrist weights and a 4 lb. Iron ball with reps starting at 12 a day leading up to 48 by spring with the 4 drills we use then low trajectory bullet Crowstep long toss starting 6 weeks before spring games using a pronated mechanic.
Kids that are biologically 16 to 19 can perform for 180 consecutive days the same field and glove motor skills with 10 lb. Wrist weights and a 6 Lb. Iron ball then maintain at ½ weight and reps to maintain during season using a pronated mechanic.
quote:“pitchers (if it's different)”
Pitchers have appropriate biological age amounts also but they have more pitch type motor skill overload “sport specific” training to get through and it is every day, not the 1 day on and 2 days off most general trainers recommend with their non sport specific programs.
My pitchers use the wrist weights, Bucket twirls, Iron and lead ball throws and for motor skill training they use footballs (end over end) for all 6 pitch types, bucket lids for the pronated curve and baseballs off the mound for their underload training, every day.
They do bottom half training by running bases and doing sprint poles called speed ups by starting at the line and walk 10 Jog 10 trot 10 run 10 sprint 10 run 10 trot 10 Jog 10 then walk to the line and turn around and do it again 5 reps to start going up to 20 reps by spring, this drill eliminated Ham string pulls by training the proprioceptors to fire off at different rates so there is no neural confusion that cause Ham string pulls.
These kids are unable to compete because they are in continual training regression making a physiological adjustment week to week, any breaks and they go backwards and detrain like what happens with general techniques. If you read Marshalls materials it goes into detail if you are interested, believe me it is the best training program available for baseball players, field or pitching.