The dog days of summer are hitting and NFL rookies are popping up at MLB ballparks across the country to throw out some ceremonial first pitches. On Tuesday, the pair of Minnesota Vikings first round selections — quarterback J.J. McCarthy and edge rusher Dallas Turner — took the mound before a Minnesota Twins game. It didn’t go well for either, as Turner apparently airmailed his throw and McCarthy, caught on video, spiked his pitch into the left handed batters box. Not a promising omen for Vikings fans hoping to see McCarthy dotting throws on the money to Justin Jefferson, Jordan Addison and C…