Giants' catcher Tim Federowicz knows good pitching --he spent parts of five seasons with the Los Angeles Dodgers and Chicago Cubs-- and this week, he sat down with KNBR.com Giants' beat writer Kerry Crowley to discuss the young arms San Francisco has in its farm system. Federowicz reviews the years Tyler Beede, Andrew Suarez and other young starters had, and offers his take on who could be in the mix for 2018 roster spots.