Corey Seager is youngest LA Dodgers position player to start in postseason

It was Sept. 12 and Corey Seager had just erased any doubt he belonged in the major leagues, going 4 for 4 in a game against the Arizona Diamondbacks, when a reporter asked about his calm exterior."It's just kind of the demeanor I kind of have - try to hide as much as possible," he said. "Two older brothers, you kind of get used to hiding your emotions because they get under your skin pretty easily.