Seager (back) will not travel with the Dodgers when the NLCS shifts to Chicago, Bill Plunkett of the Orange County Register reports.
The talented young shortstop is dealing with a back injury that is preventing him from running or swinging a bat. Seager was left off the official NLCS roster, but there's a slim chance he plays if the Dodgers have to make a DL move. However, the fact that he won't travel to Chicago suggests that he won't be available until Game 6 at the earliest if the series makes it that far.