Success Substorylines

Robin

First event: Robin tells you about a Powerin giveaway at the grocery store.
Second event: Robin tells you about a raffle at the grocery store. You find out you need to pay to enter.
Completion: This time, instead of telling you about some great deal, Robin gives you a Powerin on the spot. Either Weight Training or Breaking Ball training gets upgraded with a star, and teammates' abilities improve.
Ending: Robin goes on to become the team's ace, but turns down an offer from a major league scout to help out his brother at the shop.

First event: Milton asks you about the girl you were seeing
Second event: Help Milton speak out
Completion: Milton starts dating Pony. Running Exercise gets upgraded with a star, and teammates' abilities improve.
Ending:

First event: You learn Brad is a training freak.
Second event: Brad and Milton collide on the field, Brad gets hospitalized.
Third event: Visit Brad at the hospital.
Completion: Brad comes back. Weight Training gets upgraded with a star, and teammates' abilities improve.
Ending: Brad quits baseball and becomes a track and field athlete.

First event: Toby becomes team captain
Second event: Toby turns a leaf
Completion: Toby names you as his successor, but you decline. Batting Practice/Breaking Ball Practice gets upgraded with a star, and teammates' abilities improve.
Ending: Toby is struggling to become a pro bowler.

First event: You learn that Mark is having some girlfriend promblems.
Second event: Mark learns Alvin's Mirage Knuckler if Alvin doesn't get injured.
Ending: Mark becomes the team captain. If anyone were to bring the Tulips to the championship it's Mark.