"When you get called up, you are always happy," Falu said. "Hopefully, I get to stay here and help the team win."
Through 135 games with Omaha this season, Falu batted .256 and had 20 stolen bases. He appeared in 24 games for the Royals last season with a .341 average.
"He's a valuable guy," Royals manager Ned Yost said. "Like [Pedro] Ciriaco, he can play multiple positions, run, serve as a bat off the bench if we need him."
Dick Kaegel is a reporter for MLB.com. Kathleen Gier is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.