Zimmer (shoulder) threw his second bullpen session of spring on Tuesday, noting he felt no pain afterwards, Jeffrey Flanagan of MLB.com reports.

EDGE Analysis

This is obviously good news for the 25-year-old, who at this point last season was already starting to feel pain and taper off. The Royals are continuing to bring him along slowly, after he failed to pitch more than 65 innings in each of the last three seasons due to injuries. He is set to start his first Cactus League game Sunday.

Zimmer (shoulder) said Saturday that he is pain-free and throwing well after thoracic outlet syndrome rehab, Rustin Dodd of The Kansas City Star reports.

EDGE Analysis

The 25-year-old is progressing along schedule after being shut down for the season in July last year. While it is good news that he is throwing pain-free, the surgery is a serious shoulder procedure that has proven an issue for other pitchers in the past. He hasn't pitched more than 75 innings since 2013, so we will see if he is finally able to shake his shoulder injuries and make the big league team.

Zimmer (shoulder) completed a four-week throwing program and will be ready for the start of spring training, MLB.com's Jeffrey Flanagan reports.

EDGE Analysis

The throwing program was standard protocol for pitchers recovering from Thoracic Outlet Syndrome surgery, which Zimmer underwent in mid July. While he is expected to be ready for spring training, this is a serious shoulder procedure that has been a limiting factor in the careers of other pitchers. Zimmer has frontline stuff when healthy, but he needs to be heavily discounted due to the mounting health concerns with his shoulder.

Zimmer (shoulder) will undergo Thoracic Outlet Syndrome surgery, which will keep him out for the remainder of the 2016 season, Jeffrey Flanagan of MLB.com reports.

EDGE Analysis

Zimmer, who has been bothered by shoulder issues throughout his career, was placed on the minor league DL at Double-A Northwest Arkansas back in June. With his condition failing to improve, he'll undergo surgery, which is expected to take place in a couple of weeks. While it will end Zimmer's 2016 season, he's expected to be ready for spring training.

Zimmer was placed on the 7-day DL at Double-A Northwest Arkansas on Sunday due to shoulder fatigue, MLB.com's Jeffrey Flanagan reports.

EDGE Analysis

Zimmer has been bothered by shoulder issues throughout his career, and this latest setback is yet another discouraging sign. He's been limited to just three starts this season and may need to rest for a week or longer in order for any soreness he's experiencing to subside. The Royals will continue to proceed cautiously with their prized pitching prospect, who hasn't tossed more than 75 innings in any season since 2013.

Zimmer (shoulder) made his 2016 debut Saturday with High-A Wilmington.

EDGE Analysis

Zimmer missed the first few weeks of the season while recovering from his shoulder injury, but he resumed pitching in games over the weekend. He is one of the Royals' top pitching prospects and posted a 2.81 ERA at the Double-A level last season, so it should not be long before he is moved up there again.

Zimmer (shoulder) will throw an inning in an extended spring training game Friday, MLB.com's Jeffrey Flanagan reports.

EDGE Analysis

Zimmer has been bothered by a shoulder issue for the last few weeks, but he has advanced to the point where the Royals are comfortable putting him back in game situations. The Royals figure to provide an update on Zimmer's next step at some point following Friday's session.

Zimmer (shoulder) is expected to start throwing side sessions Friday, MLB.com's Jeffrey Flanagan reports.

EDGE Analysis

It's good to hear that Zimmer is set to begin throwing again, as a shoulder issue kept him back at extended spring training, which was the last thing his owners wanted to hear, given Zimmer's prior shoulder woes. He is currently on the minor league disabled list with Triple-A Omaha, and will hopefully get into game action in the coming weeks.

Zimmer is being held back in extended spring training because his shoulder is a "little erratic," MLB.com's Jeffrey Flanagan reports.

EDGE Analysis

Shoulder injuries have plagued Zimmer as a professional, so this is the last thing his fantasy owners wanted to hear. There has been no announcement of an exact injury, but it is safe to assume he is out indefinitely. Those who were stashing Zimmer in deeper leagues might want to consider going in a different direction.