CINCINNATI (AP) Jarrod Dyson wasn't even in Kansas City's original starting lineup Tuesday night.
Dyson, who started after Omar Infante was scratched with back spasms, scored the tie-breaking run from first base on pitcher Ryan Mattheus' throwing error and the Royals went on to a 3-1, 13-inning victory over the Cincinnati Reds.
''That's why, every day, you've got to show up ready to play,'' said Dyson, who went 2 for 5 with a stolen base. ''The unexpected can happen, and you've got to prepare for it.''
Ben Zobrist tied the game 1-1 with a homer in the ninth inning off Reds closer Aroldis Chapman who had converted 56 consecutive save opportunities at home since blowing one against Houston on Sept. 7, 2012.
''I didn't do anything different,'' Chapman said through assistant trainer-interpreter Tomas Vera. ''All I can tell you is I had a bad day. I made a mistake.''
Dyson led off the 13th with a single and scored when Mattheus (1-4) threw a sacrifice bunt by Kris Medlen (1-0) down the right field line.
Greg Holland finished for his 27th save.
Zobrist, who scored the winning run in the 10th inning of Kansas City's 4-3 win over the Angels on Sunday, stunned the crowd of 28,719 by leading off the ninth with his 10th homer of the season on a 2-1 pitch from Chapman.
''He's made a pretty big difference,'' manager Ned Yost said of Zobrist, acquired from Oakland on July 28. ''He's become a pretty big piece for us.''
Zobrist's approach was the key, Reds manager Bryan Price said.
''The thing about Zobrist is he knows the strike zone, and he didn't get behind,'' Price said.
Lorenzo Cain followed Zobrist with a single and stole second and third while Eric Hosmer was striking out. Cain was ruled safe on the rundown that started with Salvador Perez's grounder to second baseman Brandon Phillips, but Cain was ruled out after a replay review that lasted just under 3 1-2 minutes.
Reds starter Raisel Iglesias allowed one runner past second base while scattering three hits and a walk with three strikeouts over seven innings. He extended his streak of consecutive scoreless innings to 12, dating to the first inning of his last start on Aug. 12 in San Diego.
Eugenio Suarez homered off Kansas City right-hander Edison Volquez with one out in the first, giving Cincinnati a 1-0 lead with his eighth home run of the season.
Volquez, who played for the Reds, allowed four hits and one walk with seven strikeouts in six innings.
Yost was ejected for arguing after a replay review upheld the out call on Alcides Escobar with no outs in the 11th. Escobar was thrown out by center fielder Billy Hamilton trying to stretch a single into a double. Hamilton just missed making a diving catch of Escobar's sinking liner into right-center field.
Iglesias logged his first career hit in the fifth with Brayan Pena on first and one out. Iglesias, hitless in his first 19 at-bats, squared to bunt, then pulled his bat back and hit a chopper near second. Shortstop Escobar fielded the ball, but with the defense scrambling to cover the possible bunt, Escobar had nobody to throw to at first base.
Royals: Yost scratched Infante from the original starting lineup after he developed back spasms. Zobrist was moved from left field to second base and left fielder Dyson got the start in Infante's slot. Infante is day-to-day, Yost said.
Reds: Hamilton left the game after the 11th inning with a jammed left shoulder he sustained while trying to make a diving, backhanded catch on Escobar's sinking liner. He'll be re-examined Wednesday, Price said.
Royals: RHP Jeremy Guthrie (8-7, 5.63) is 4-1 with a 2.30 ERA in eight career interleague starts going into his scheduled appearance on Wednesday at Cincinnati.
Reds: RHP Keyvius Sampson (2-1, 3.18) will take a two-start winning streak into his first career interleague appearance on Wednesday.