Kurtenbach: The SF Giants go as Logan Webb goes. That makes his loss to the Royals seriously concerning

Kurtenbach: The SF Giants go as Logan Webb goes. That makes his loss to the Royals seriously concerning

SAN FRANCISCO — How long can the Giants keep this up? They have a middling offense and defense (both ranked 18th by FanGraphs’ metrics), which seem to be fading further by the day. Their big, flashy, and super-expensive free-agent signing, Willy Adames, is 12 percentage points worse than a league-average hitter and is the single worst defensive shortstop in the game (he had another error Wednesday.) They’re striking out nearly as often as the Ch…