Sports Info Solutions Senior Research Analyst Mark Simon  (@MarkASimonSays) is back for round two of the SIS Baseball Podcast.  This week, Mark looks at the San Diego Padres (@Padres) upgrading the  left side of their infield (0:52), welcomes New York Times national  baseball writer Tyler Kepner (@TylerKepner) to the show to talk pitching  and his new book (2:50), sits down with Andrew Kyne (@Andrew_Kyne) of  SIS to examine early defensive trends (17:26) and answer questions from  the listeners (23:59), and finishes with a couple "Ridiculous Numbers of  the Day" (28:04).