KANSAS CITY, Mo. -- The Boston Red Sox did a better job of walking a tightrope than the Kansas City Royals. At least, thats how manager John Farrell summed up Thursday nights 6-3 victory. The last-place Red Sox took advantage of three critical errors by the first-place Royals, and managed to deal with their own costly miscue to end a frustrating four-game losing streak. "Both sides were capitalizing on errant throws or hit-by-pitches," Farrell said. "Any time you give a club an extra out, youre walking a tightrope, and that was the case tonight." Clay Buchholz (8-8) allowed three runs, two earned, over 6 1-3 innings for the Red Sox. He turned a one-run lead over to the Boston bullpen, and it preserved his sixth straight win against the Royals. Edward Mujica handled a perfect ninth for his fifth save. Kansas Citys advantage in the AL Central dropped to a half-game over idle Detroit. "I felt good with my off-speed stuff early," said Buchholz, who is starting to resemble the All-Star of last year. "With the lefties they have in their lineup, its a pitch I needed to have any chance of winning tonight." Liam Hendriks (1-2) failed to last three innings while making a spot start for left-hander Danny Duffy, who is shelved with shoulder soreness. The Royals defence didnt do Hendriks any favours, either, making all three errors in the first four frames. "There are no focus issues there," Royals manager Ned Yost said later. "Thats baseball," Royals shortstop Alcides Escobar added. "That happens." Nearly every run scored in the game was a product of some sort of mishap, though. In the second inning, Bostons Will Middlebrooks doubled and then scored when Eric Hosmer allowed a two-out grounder by Christian Vazquez to get by him into right field. It was the Gold Glove first basemans third error in four games and his 10th of the season. The Royals pulled ahead in the bottom half, getting a two-out double from Lorenzo Cain and back-to-back singles by Escobar and Nori Aoki. On Aokis hit, Escobar rounded third wide, and first baseman Mike Napoli tried to throw him out. The cross-diamond throw nearly wound up in the visiting dugout, and the error allowed Escobar to trot home for a 2-1 lead. Boston pulled back ahead in the third. Mookie Betts singled, Xander Bogaerts walked, and Yoenis Cespedes was hit by a pitch to load the bases. Hendriks walked Napoli to tie the game, and Middlebrooks singled up the middle to give the Red Sox the lead. They added another run in the fourth, thanks in part to two more errors. Kansas City pieced together a promising rally in the sixth. Josh Willingham was hit by a pitch leading off, and Mike Moustakas and Lorenzo Cain hit back-to-back two-out singles to make it 4-3. But Buchholz bounced back to strike out Escobar and preserve the lead. Jemile Weeks added a two-run double in the eighth to give Boston a cushion. "Were struggling offensively a little bit," Yost said. "Plus, Hendriks went out, had a really good first inning. The error in the second inning cost him a run. He lost all his tempo in the third inning. He was really rushing his delivery to the plate." TRAINERS ROOM Red Sox: 2B Dustin Pedroia had surgery Thursday to repair tendon damage and clean out scar tissue in his troublesome left wrist. He is expected to heal in about six weeks. "It created more range of motion and instant relief than Dustin has felt," Farrell said. Royals: RHP Greg Holland (muscle stiffness) felt good after throwing Monday, Yost said, and could have been available. ... Duffy said he hopes to begin throwing in the next couple of days. He is due to start Tuesday against the White Sox. UP NEXT Red Sox: RHP Allen Webster (3-3, 6.47) faces Kansas City for the first time since April 2013. 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Kevin Kiermaier Rays Jersey .com) - Theres nothing better for a team than to send out the staff ace in the most important game of the season.JOLIET, Ill. - With rain in Fridays forecast at Chicagoland Speedway, the only time on track became a strategy session for the championship contenders. If qualifying was rained out, the field for Sundays opening round of the Chase for the Sprint Cup championship would be set by practice speeds and teams had to decide if they wanted to focus on simply posting a fast lap to grab a strong starting position. It worked out perfectly for Kyle Busch, Ryan Newman and Carl Edwards, who all shot to the top of the speed chart in practice and were rewarded with the top three starting spots in Sundays race when rain indeed washed out qualifying. "We definitely saw the radar and the forecast," said Newman, who will start second on Sunday. "Made one (practice) run and switched it over, spent the rest of the time doing mock qualifying runs, knowing we had a chance of that being our actual qualifying position." Edwards said crew chief Jimmy Fennig made one final adjustment late in practice that found him additional speed and moved him to third on the sheet. "We started the day thinking this might happen and Jimmy did a great job with a strategy," Edwards said. "I think thats what all of us are going to have to do thought the Chase — were just going to have to get every little bit you can every race weekend." The 10-race Chase opens at Chicago under a radically different format introduced this year by NASCAR. Using an elimination method foor the expanded 16-driver field, four drivers will be knocked out of contention every three races.dddddddddddd The first round of cuts comes Sept. 28 at Dover, and all 16 drivers came into Chicago just trying to make it through the first round. A victory earns an automatic advancement into the next round. Busch, who finished second in the Chase opener last year, will start from the pole and was buoyed by a strong practice session with his Joe Gibbs Racing team. The organization has lagged behind Hendrick Motorsports and Team Penske all season, and doesnt seem to have the same pace as the championship favourites. Hes hoping Gibbs has turned it up for the Chase, and his practice session was the sign of big things to come on Sunday. "Having a good (speed) there in practice means a lot, but theres obviously a lot of things that need to happen in the race this weekend for us and getting off to a good start and being able to carry that into the next 10 weeks," he said. Matt Kenseth, his Gibbs teammate, will start fifth, while defending champion Jimmie Johnson will start seventh, one spot ahead of Hendrick teammate Jeff Gordon. Kevin Harvick will start 12th, Dale Earnhardt Jr. 13th, Kurt Busch 14th, A.J. Allmendinger 17th, Kasey Kahne 19th, Greg Biffle 20th, Aric Almirola 23rd, Denny Hamlin 24th, and Penske drivers Brad Keselowski 25th and Joey Logano 28th. "I do have a lot of confidence that were going to figure this out," Logano said. ' ' '