The San Diego Padres are doing background work on free-agent starting pitcher Masahiro Tanaka and other free agents, even after swinging big trades for starters Blake Snell and Yu Darvish this offseason. Tanaka stands out because of his connection to Darvish and pitching coach Larry Rothschild. Darvish is friends with Tanaka, and Rothschild was his pitching coach for most of his time with the Yankees. Tanaka went 75-43 with a 3.75 ERA and averaged 27 starts, 168 innings and 158 strikeouts per ...