According to the Palm Beach Post, free agent RT Marc Colombo will "definitely" not be back with the Dolphins in 2012. Colombo, 33, did make some late-season improvements along with the rest of the Dolphins' roster, but still graded out as Pro Football Focus' 70th-rated tackle in the league amongst 76. We'd bet against Colombo starting another NFL game unless injuries force him to. He certainly won't draw much free agent interest.