What It Means:

Nelson underwent surgery on his shoulder back in September and has been throwing off flat ground as he builds up his strength. He won't start pitching off a mound until after Opening Day at the earliest. He remains without an official timetable as the BRewers; take it slow with their top pitcher.

Nelson finished 2017 with a 12-6 record, 3.15 xFIP, 3.42 SIERA, 1.25 WHIP, and 199 strikeouts in 175 1/3 innings pitched.