Batting in the seventh against Royals reliever Yohan Pino, Reds shortstop Eugenio Suarez sent a 1-2 pitch over the fence in left field to break a 1-1 tie.
The Reds featured a pair of pitchers vying for spots in their rotation in Paul Maholm and Tony Cingrani. Maholm got the start and allowed one hit and one walk over three scoreless innings. Maholm was consistent with his reputation as a ground-ball pitcher as eight of his outs, including a double play in the third, came on the ground.
"I was pretty much just mixing up speeds, keeping the ball down, getting ground balls and letting the guys make plays," Maholm said. "I threw a good curveball. I threw a good slider, but it was a ball. Overall, I was just trying to get ground balls."
Cingrani followed with three innings and gave up one run and three hits, including Erik Kratz's homer to left field in the fifth that made it 1-1. Cingrani also had two pickoffs.
Royals starter Joe Blanton, a non-roster invite, allowed one earned run and four hits over three innings. Two batters after a Tucker Barnhart leadoff double in the bottom of the third, Joey Votto drove him in from third base with a sacrifice fly.
Kansas City left-handers John Lamb (two innings) and Brian Flynn (one inning) worked scoreless from the fourth through sixth innings.
It was the first game of spring for Royals second baseman Omar Infante, who was coming back from a right elbow injury. Infante was 1-for-4 with a double and three groundouts.
Up next: In a game that will feature actor/comedian Will Ferrell playing briefly for both teams in his quest to play all nine positions for 10 Cactus League teams during the day in a benefit for cancer charities, the Reds will play the D-backs in Scottsdale, Ariz., on Thursday at 5:10 p.m. ET. Mike Leake will start on the mound for Cincinnati, with Raisel Iglesias slated to see action out of the bullpen for the third time this spring.
Mark Sheldon is a reporter for MLB.com. Read his blog, Mark My Word, and follow him on Twitter @m_sheldon. This story was not subject to the approval of Major League Baseball or its clubs.