Kansas City, Mo. ? Zack Greinke pitched lights-out for the Kansas City Royals.

Greinke (4-8) allowed one run in seven innings, and Matt Stairs homered twice in the Kansas City Royals’ 6-4 victory over the Chicago White Sox on Thursday night in a game that was delayed 24 minutes by a power outage in the ninth inning at Kauffman Stadium.

The teams were just about to start the top of the ninth when the stadium lights brightened momentarily before going out in two-thirds of the ballpark. The scoreboard and videoboard also lost power, which returned moments later before going out again.

After about 13 minutes, the game was ready to resume, and Royals reliever D.J. Carrasco was in his windup set to throw a pitch to Paul Konerko when power went out yet again before returning about 11 minutes later.

“The first thing I thought was that this was a get-away day for the White Sox, so I felt bad for them,” Greinke said.

When play resumed, Carrasco struck out Konerko before Jose Valentin hit a solo homer to make it 6-2. Ben Davis and pinch-hitter Joe Borchard singled, and Willie Harris walked to load the bases.

Nate Field came in and struck out Aaron Rowand before giving up a bloop two-run single to Timo Perez. Field then got Carlos Lee to pop out to end the game for his third save in four opportunities.

It was the second straight game in which the White Sox mounted little offensive threat. They managed just two hits off Brian Anderson in Wednesday’s 11-0 loss.

“Both of their pitchers threw really well the last two nights,” Konerko said. “They were throwing strikes and throwing quality strikes. Both of them were throwing the kind of pitches that you can’t do much with. I know we’re better than we are, but I don’t want to take away from those two guys.”

Kansas City's Matt Stairs blasts a three-run home run against Chicago White Sox pitcher Jon Garland in the fifth inning. Stairs homered twice as the Royals beat the White Sox, 6-4, Thursday night in Kansas City, Mo.

Greinke allowed just three hits for his second straight win after winning just two of his first 10 decisions. He struck out six and walked none.

“It was definitely one of my better efforts,” Greinke said. “Everything was working in its own way. I think all my pitches were complementing the other ones.”

Harris gave the 20-year-old Greinke plenty of credit for shutting down Chicago’s offense.

“He just kept us off balance all night long,” he said.

It’s frustrating for Chicago manager Ozzie Guillen, whose team lost for the ninth time in 11 games.

“We finished this road trip the way we started it,” he said. “This could have been the biggest road trip for us, but we keep coming up empty.”

Jon Garland (7-8) gave up six runs on seven hits in seven innings for Chicago.

6Sports video: Two in a row, Royals 6, White Sox 4

Notes: Angel Berroa’s two errors were his 20th and 21st this season. He has the second-most errors among shortstops in the majors to Kazuo Matsui of the New York Mets, who has 22. … Despite the victory, Kansas City matched its worst start through 106 games (1970) at 39-67.