Cubs starting pitcher Jake Arrieta, center, confers with catcher Willson Contreras, left, and first baseman Anthony Rizzo during the second inning against the Giants on Friday in San Francisco. The Giants scored six runs in the inning and held on for an 8-5 win. (D. Ross Cameron / AP)
Anthony Rizzo and Willson Contreras are caught in a dugout spat during the Chicago Cubs’ 8-5 loss to the San Francisco Giants
