In his second season he was more erratic and not as good before getting shutdown with elbow issues. (sbnation.com)
As for Matz, he already had elbow issues earlier in the year, and now it's his shoulder. (sbnation.com)
If we disqualified all of the dogs with the slightest elbow issue, we would lose 31 % of the breeding population in every generation, compounding a genepool problem that is historically present in purebred dogs, and far more dangerous to the dogs than any heritable disease. (starstrucklabradors.com)