Nate Robertson, an owner with the Wichita Wingnuts (American Association), has signed with the Chicago Cubs and aims to make it onto the team’s bullpen. Here is the news article:
If he makes the team then he will be the only active player on a MLB roster to also have a vested interest in an independent league team.
There are several good books about the independent professional baseball leagues. You are welcome to see a list of suggestions through this link: Books Get notified of upcoming independent baseball tryouts from either of these services: first service or the second service. Prospective players can find some helpful resources here We will be providing a growing list of possibly helpful tips and suggestions on various baseball information. This will range from "how to" information about baseball skills all the way to helpful information for casual baseball fans. Please click the link for more information: Tips And How To Information