Chicago Cubs starting pitcher Kyle Hendricks (shoulder) is expected to begin the season on the injured list. Also, the team announced that right-hander Keegan Thompson will open the season in a multi-inning relief role. That means, the Cubs currently have a vacant spot in the starting rotation. Currently, Hayden Wesneski, Javier Assad, and Adrian Sampson are all in the mix for that fifth-starter role. Between the three, Wesneski appears to have the most upside right now. He posted a 2.18 ...