The Miami Herald reports the Dolphins are "privately very optimistic" about Jonathan Martin's chances of becoming a solid left tackle.

That must be the case, as despite an abundance of sound and fury, the Dolphins never seriously pursued an alternative after Jake Long bolted for the Rams. Martin, for his part, is relieved to finally know his position. "It's exciting to play left tackle in the NFL - that has been a dream my whole life." Martin is "devouring four meals a day" in an effort to get up to 318 pounds after playing near 305 last season. The Dolphins' bevy of moves could be all for naught if Martin isn't up to the challenge of protecting Ryan Tannehill's blindside.

The Palm Beach Post reports the Dolphins "prefer to move" Jonathan Martin to left tackle.

This jibes with what we have heard for much of the offseason, especially this week after Jake Long bolted for the Rams. Martin started five games on Ryan Tannehill's blind side at the end of last season and gave up far too much pressure. In one instance he was just bulled over by 49ers OLB Aldon Smith for an easy sack. Look for the Dolphins to get serious on free agent RT Eric Winston soon if this report rings true.

A source tells the Palm Beach Post that the Dolphins are "pretty set" on moving Jonathan Martin to left tackle.

The Dolphins have blown the majority of their cap space on Day 1 of free agency, so they're almost certainly moving on from free agent Jake Long anyway. This should confirm it. Although Martin struggled mightily after moving to left tackle late in the year, the staff apparently sees enough room for growth. Pass protection could be an issue for the Dolphins in 2013.