His 2015 season was waylaid by a nagging hamstring injury .
Jeffery is one of just five receivers to amass over 900 yards on deep balls in 2013 and 2014 .
Although his 2015 season was waylaid by a nagging hamstring injury , Jeffery is one of just five receivers to amass over 900 yards on deep balls in 2013 and 2014 .