One of the oddest series in Major League Baseball this season begins a fourth chapter Friday night when the Arizona Diamondbacks visit the San Francisco Giants. Diamondbacks left-hander Patrick Corbin (4-6) will open the three-game set against Giants right-hander Jeff Samardzija (8-5). In a season when the Giants compiled the fourth-best home record in the National League (26-17), none of that success came against the Diamondbacks.