Joel Sherman reports that the Pirates (and the Rangers) keep calling the Marlins about Giancarlo Stanton, but that Jeffrey Loria doesn't want to trade him.
Every indication I've seen recently has been that the Marlins aren't interested in dealing Stanton, so a Stanton-to-the-Pirates blockbuster is highly unlikely. David Todd asked me yesterday (it's on ESPN 970; you can listen here) about whether I'd give up Gregory Polanco, Tyler Glasnow, Alen Hanson and Tony Sanchez for Stanton, and my response was that I would. I love Polanco and Glasnow, but the most likely scenario is that neither of them turn out to be half the player Stanton is. Stanton isn't having a great year, but he's 23 and has the potential to be the best hitter in the National League over the next several seasons, and he won't be eligible for free agency until after 2016.
Anyway, all this is obviously hypothetical at this point. If I were running the Marlins, I would be asking for a boatload of young talent in return for Stanton, and they don't seem inclined to deal him right now anyway.