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By no means should Miami's 2012 draft class be deemed a successful one.
Not yet, anyway.
Outside of Ryan Tannehill, nobody in this class has done anything to instill a great deal of confidence they'll grow into quality NFL players. However, nearly all—except for Michael Egnew, obviously—have shown flashes that suggest they just might.
Jonathan Martin has been absolutely manhandled at times, but he has looked like a perfectly competent tackle at others. With a full offseason to bolster his strength and perhaps move back to his comfort zone at left tackle, he could live up to his second-round draft billing.
Olivier Vernon had a dominant Week 6 performance but has been mostly irrelevant otherwise. He needs to plow through the rookie wall and help upgrade a thin Dolphins pass rush. Vernon can definitely emerge as a solid situational pass-rusher, though. Miami may also give him a shot at linebacker.
Lamar Miller was also a non-factor for most of this season but there's no denying his potential. Although he has registered only 36 carries, he has averaged an impressive 4.6 yards per carry. With Reggie Bush likely on the outs, he'll have an opportunity to shine in 2013. He'll be a wild card entering next season.
Fifth-round pick Josh Kaddu has been a ghost, but seventh-round pick Kheeston Randall held his own when worked into the defensive line rotation.
Finally, seventh-round pick Rishard Matthews is quietly becoming of a very intriguing prospect from. The Dolphins have only activated him for six games, but he has delivered when called upon. In the last three weeks, he has hauled in five receptions for 59 yards. He looks the part on the field, so it may just be a matter of opportunity for Matthews to establish himself as a viable NFL wideout.