Jeff Samardzija walks around San Francisco and gets his share of hellos, then those friendly strangers go right on their way without lingering. The big right-hander was formally introduced by the San Francisco Giants on Friday after reaching a $90 million, five-year deal less than a day after the club lost out on Zack Greinke. The Giants expressed their interest in Samardzija early in the process and had already built a framework with agent Adam Katz, so the sides could move quickly once Greinke chose the Arizona Diamondbacks.