I finally got back a spring training ttm the other day and it was from Yankees center fielder, Curtis Granderson. I had originally sent him a 2010 Topps Heritage and a custom Yankee Stadium card and they were returned, unsigned. But he did send this card of his own, signed in black sharpie. After consulting with other ttm hounds on sportscardforum.com, it was deemed that this is a legit auto.
The total days it took to recieve back was 10 days. Thanks Curtis for allowing me to add your autograph to my growing Yankees autograph collection.