ST. LOUIS — No one is confusing Justin Wrobleski with a future first-ballot Hall of Famer. But on Sunday, Dodgers manager Dave Roberts evoked Clayton Kershaw ’s name when describing the young lefty’s growth as a starting pitcher. “He’s got a great mentor in Clayton,” Roberts said. “And I think a lot of times, he’s channeling [Kershaw’s mindset] of, ‘Go at guys and make them put the ball in play.’” Dodgers starting pitcher Justin Wrobleski enjoyed learning his craft from Dodgers legend Clayton Kershaw. Jessie Alcheh for CA Post That’s certainly what Wrobleski did Sunday at Busch Stadium, spinning six scoreless innings without a strikeout in the Dodgers’ 4-1 win over the Cardinals.…