nsacpi
Expects Yuge Games
Brantley hasn't had just one injury. A shoulder injury ruined his 2016 season and ultimately he had surgery in August of 2016. An ankle injury caused him to miss almost two months of 2017. That ultimately required surgery as well.
If it was one catastrophic injury like an ACL tear, it wouldn't be as much of a concern. A surgically repaired shoulder followed by a sprained ankle so bad it required surgery to secure ligaments all within a few years for a guy who is now over 30 is a legitimate concern.
I think Matt Kemp had some similar injuries. Then has had a stretch of healthy seasons. The injuries affected Kemp's defense and I think there has been some effect on Brantley's defense as well.