Christian Colon heard the news around 5:45 p.m., a few hours before Friday’s 7-1 Royals’ victory. He was walking off the field after scooping groundballs before the game when Royals manager Ned Yost pulled him aside. Colon, Yost explained, would start at second base. When Omar Infante suffered a recurrence of tightness in his lower back, the team scratched him and inserted Colon into the lineup. To prevent his heart from leaping out of his chest, Colon reminded himself to enjoy this moment. He would only make the first start of his major-league career once. “The main thing was just go and enjoy the moment,” Colon said. “Soak it up. Let’s see what happens.” He could not have asked for more. Colon catalyzed the Royals (45-40) offense with a triple in his first at-bat, a double in his second and an RBI double in his last time up. He scored twice on singles by Lorenzo Cain. The Royals selected Colon with the fourth pick in the 2010 draft. For so much of his career, he has been tied with the players chosen after him on that day, like White Sox ace Chris Sale or Mets starter Matt Harvey. Colon profiles as a utility man in the majors. But on his first full night in the majors, he made a bid to be something more. To add to Colon’s sterling production, Mike Moustakas boomed a three-run shot to provide a healthy cushion for starter Yordano Ventura, and bolster the team’s fourth win in five games. Ventura limited Cleveland to six hits across 8 1/3 innings. He relied on a combination of weak contact and stingy defense. When the Indians struck line drives, the Royals defenders ensnared them. A solo home run by Michael Brantley spoiled Ventura’s bid for a shutout, but Ventura still awed those in his dugout. “He was extraordinary,” Yost said. Colon’s tour of duty might extend past Friday. Infante missed 17 games with back trouble in May. And Colon catalyzed an otherwise sluggish lineup until Moustakas broke through in the sixth.