What It Means:

Gattis will be sidelined for the next four to six weeks after having recently undergone surgery to repair the hernia. The 29-year-old slugger said he will "start doing very light baseball activities shortly as long as pain permits." He's walking one mile a day right now and deemed himself sore but optimistic. On his current timetable, he will likely miss a portion of spring training and possibly the start of the season outright.

A year ago, Gattis batted .246/.285/.463 with a .317 wOBA, 27 homers and 88 RBI in his first season with the Astros.