According to Jon Heyman, the Giants are trying to lock up Matt Cain and Tim Lincecum this offseason -- to deals of at least four years. San Francisco has made pitching their priority and is currently focused on securing their rotation for the future.
Cain, 27, has made 30+ starts in each of first six full seasons -- during which time he's averaged 7.5 strikeouts per nine innings, and a rather low HR/9 of 0.7; over his career, he's posted a 123 ERA+ in 1271 innings. Though his win-loss record (69-73) doesn't reflect it, Cain has been one of the most effective starters in baseball since debuting in 2005. He would become a free agent in 2013.
Lincecum, also 27, has established himself as one of the best starters in baseball, winning two Cy Young awards and making four all-star appearances in his first five seasons. Unlike Cain, Lincecum doesn't become a free agent until 2014, but he projects to make a whole lot of money through arbitration this offseason.
Yesterday, Heyman wrote that the Giants are "as much or more" focused on extending Lincecum, even though Cain becomes a free agent one year earlier.