KANSAS CITY, Mo. (AP) - Bruce Chen couldn't beat the triple-digit heat - or the Baltimore Orioles.

On a night when the gametime temperature was 107 degrees, Chen altered his pregame routine then went out and wilted in the steamy weather, giving up three runs and seven hits without finishing the fifth inning of the Orioles' 8-2 victory over the Kansas City Royals on Tuesday.

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``It was hot,' Chen said. ``But we all knew it was going to be that way and we've got a great training staff. They made sure we had plenty of fluids and electrolytes. I usually warm up for 15 minutes before the game, but I did most of my stuff inside before.'

Research by the Royals media relations department could not find a hotter temperature to start a game at Kansas City. There was a 106-degree start for a July 30, 1980 game.

Mark Reynolds didn't seem to mind the heat, connecting for a homer, double and single and driving in five runs.

Reynolds played with the Diamondbacks before this year, yet he said he never played in a hotter game.

``It was definitely really, really hot.' Reynolds said. ``We play in a dome in Arizona.'

Chen (5-5) walked four and threw 115 pitches in 4 2-3 innings. He was roughed up for 10 runs and 10 hits in his previous start.

The Orioles scored four runs off Royals rookie left-hander Everett Teaford, called up from Triple-A Omaha earlier in the day, in the ninth. That inning included Reynolds' 24th home run, a three-run drive.

``He's an all-or-nothing guy,' Royals manager Ned Yost said. ``He's a guy you can strike out but if you make a mistake he can hit it a mile, and that's what he did in the ninth.'

Reynolds leads the Orioles with 60 RBIs. He stroked a two-out double in the third, scoring J.J. Hardy, who snapped an 0-for-18 slide with a single, and Markakis, who had walked.

Reynolds' five RBIs matched a career high, done three times previously.

Alfredo Simon curbed the Royals on four hits for seven innings to pick up the victory.

Simon (3-4) gave up a run in the first on doubles by Melky Cabrera and Eric Hosmer, but blanked the Royals on two hits the next six innings. Simon, who moved into the Orioles rotation on July 16, walked one and struck out three.

``He was throwing four pitches for strikes,' Yost said. ``He had a 94-95 fastball with a little run on it. He was throwing a pretty good cutter and a slurve, not really a slider and not really a curveball, but a slurve. And he had a good split. He kept us off balance. We never could get going against him.'

The Orioles increased their lead to 3-1 in the fifth when Reynolds scored from second on Davis' infield single. Before Davis' hit, Matt Wieters drew a walk on 13 pitches, fouling off seven Chen pitches.

Baltimore added a run in the sixth off rookie reliever Louis Coleman with Hardy's double to left scoring Robert Andino, who led off the inning with bunt single.

Billy Butler's sacrifice fly in the eighth scored Alex Gordon off reliever Tommy Hunter.

NOTES: Orioles RHP Jake Arrieta has an Aug. 10 appointment with Dr. Lewis Yocum in Los Angeles to examine his sore right elbow. Orioles manager Buck Showalter said Arrieta has a fibrous mass on his elbow. He walked six in five innings Sunday in a loss at New York. INF Cesar Izturis, who went on Baltimore's disabled list May 13 and needed elbow surgery, reported Tuesday to Double-A Bowie to begin a minor league rehab. If all goes well, he could be activated Friday. The Orioles claimed LHP Jo-Jo Reyes off waivers from the Blue Jays and he will be added to the roster Tuesday. RHP Luke Hochevar starts Wednesday against the Orioles. He is 0-4 with a 7.98 ERA in five career games against Baltimore. Jeremy Guthrie, who starts for the Orioles, is 2-7 with a 3.80 ERA in his 10 road starts. Cabrera extended his hitting streak to eight games with a first inning double. He also singled in the eighth and tops the Royals with 45 multihit games. He has hit in 23 of 26 games since July 2. Hardy committed a fielding blunder in the fifth, his third error in as many games. Hardy was charged with just two errors in his first 76 games.