The Miami Dolphins went hog-wild in free agency this offseason but how they fare in 2013 could boil down to one position: left tackle.

That's where second-year lineman Jonathan Martin has been planted on a line in flux. His shift from right to left tackle has received plenty of attention in South Beach -- very little of it positive.

The Miami Herald's Armando Salguero reports that Martin has been manhandled and "owned" by edge rusher Olivier Vernon and Co. in practices. Martin gave up a pair of sacks to Vernon one day after allowing rookie Dion Jordan to get by him for two takedowns.

"It has been eye-popping to see the extent of the domination because we're not talking about a sack some days but not others" wrote Salguero. "We're talking sack followed by sack followed by other sacks."