Themes to watch during baseball playoffs

The Major League Baseball playoffs begin this week, starting Tuesday night with the American League wild-card game at Yankee Stadium. Big stars Andrew McCutchen, Prince Fielder and Zack Greinke, familiar faces David Wright, Johnny Cueto and Adam Wainwright and top rookies such as Kris Bryant fill the rosters of the 10 teams that reached the postseason. Click on the photos above to look at some of the themes going into October and beyond.