Dolphins “lead dog” for Mike Wallace

There may be a leader in the Mike Wallace Derby. FoxSports.com’s Alex Marvez, in a story published Saturday evening, quoted a source that said the Dolphins were currently the “lead dog” for the Steelers’ free-agent wideout. According to Marvez, the climate in Miami isn’t hurting the franchise’s cause. “He prefers warm weather,” the source told Marvez.…