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KANSAS CITY, Mo. -- Vin Mazzaro's painful journey Monday night took him all the way from the bullpen to the minor leagues, with a stop in that section of the team record book where nobody wants to be.

It was not a good night for the 25-year-old right-hander.

He pitched what the raw numbers will say was the worst game in the history of the Kansas City Royals: 14 runs allowed, including 10 in a nightmarish fourth inning. Mazzaro erased the Royals record and was demoted to Triple-A Omaha immediately after Cleveland's 19-1 victory.

"It's tough. It was a tough game," said Mazzaro, whose ERA rose to 22.74. "Some of the plays didn't go my way. It's a funny game. You've just got to keep battling and attack the zone."

Michael Brantley hit a three-run homer and Travis Hafner had a bases-loaded double to key Cleveland's 10-run fourth. Then Mazzaro, the third Royals pitcher on the night, gave up four more in the fifth. He was charged with 14 runs on 11 hits in 2 1-3 innings, becoming the third major league pitcher since 1947 to allow 14 runs in a game, according to STATS LLC.

Before Mazzaro, the only pitchers since 1947 to get clobbered for 14 runs were Milwaukee's Bill Travers in 1977, and Oakland's Mike Oquist in 1998 against the Yankees.

But those were starters.

No reliever had given up 14 runs in the major leagues since 1942, when Lester McCrabb did it for the Philadelphia Athletics, STATS said. The last pitcher to give up 10 runs in an inning was Texas' Scott Feldman against the Red Sox on Aug. 12, 2008.

The previous Kansas City record was 11 runs allowed, which had been done three times.

"We needed him to go out and give us five innings today. It didn't happen," said Royals manager Ned Yost. "He was behind in the count. He just struggled."

After the game, the Royals announced that Mazzaro was going back to Omaha and left-hander Everrett Teaford would be recalled.

Brantley and Matt LaPorta each had four RBIs in the Indians' biggest offensive outburst since scoring 22 runs at New York on April 18, 2009. Hafner and Orlando Cabrera each had three RBIs. LaPorta reached base five times with a walk and four hits.

Yost said he wasn't sure what Mazzaro's problem was.

"I don't know if it's because he's not trusting his stuff or if he's just struggling with command. I think it's more the latter than trusting his stuff. Whatever it is, he's got to throw more strikes."

Starter Kyle Davies (1-6) left after walking the bases full in the first inning and retiring only one batter. The Royals said later that he would have an MRI for soreness in the front of his right shoulder. He was charged with two runs after Nate Adcock gave up a two-run single to Orlando Cabrera.

"We have Cabrera and Hafner and LaPorta, guys who can see a ton of pitches," said Cleveland manager Manny Acta. "On one of those days that the pitcher's not on his game, these guys can wear them out pretty quick and that's how things snowballed. Everybody seemed to have somebody on base when they came up to the plate. That's what happened today."

The Indians scored in the second on an RBI single by Brantley, who set a career high with his four RBIs.

"Michael is a good player, man," said Acta.

Asdrubal Cabrera's RBI single got the Indians rolling in the fourth. Mazzaro then issued Carlos Santana's third walk of the game, and walk No. 7 on the night for the Indians, which loaded the bases.

Hafner then hammered a three-run double into left-center. Orlando Cabrera followed with an RBI single, then Travis Buck singled and LaPorta hit a two-run double that made it 10-0. After Jack Hannahan singled, Brantley hit a 1-1 pitch for a three-run homer and a 13-0 lead.

The Indians, coming off back-to-back rainouts, sent 13 men to the plate in the fourth. For the game, they had a season-high 20 hits, including seven doubles, and drew eight walks.

In the fifth, Buck had an RBI single, LaPorta added a second two-run double and Hannahan brought in a run with an infield out.

Josh Tomlin (5-1) got the win, going six innings and giving up five hits and one run on Billy Butler's infield out in the fourth.