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BOSTON -- Josh Hamilton started trotting around the bases rather than trying to catch a glimpse of where his home run landed in the right field seats at Fenway Park.

It may have been too far for him to see.

Hamilton's three-run shot in the eighth was one of six homers the Texas Rangers hit in an 18-3 rout of the Boston Red Sox on Tuesday night.

Mike Napoli hit a pair of two-run shots to lead the home run derby for the Rangers, who increased their winning streak to five straight.

"The ball was carrying pretty good tonight," Hamilton said.

Only for the visiting club.

For the Red Sox and fans hoping to get an early start on Fenway Park's 100th birthday, all celebrating ceased in the top of the second when the Rangers batted around and were well on their way to chasing starter Jon Lester in the third.

The Rangers topped their four-run second and three more in the third by scoring eight in the eighth. Hamilton started it with a blast that landed about a third of the way up the seats in right. It wasn't quite as far as the red chair commemorating Ted Williams' 502-foot shots, but it was a lot closer than most others.

"Obviously I don't stand and watch it so I don't exactly where it hit," Hamilton said. "It felt good when it came off the bat."

Hamilton matched his career high with five RBIs and finished with three hits. He was coming off a three RBI game at Minnesota, which included the winning homer in the eighth.

"He's a talented baseball player. That's how you describe him. He's a very talented baseball player," Texas manager Ron Washington said. "Nothing he does out there surprises me, at no time, because he's capable of doing it. It's not like that's something (where) he just gets hot and that's going to happen."

Adrian Beltre followed him with a solo homer in the eighth Nelson Cruz added another later in the inning, all off of Boston reliever Mark Melancon.

Michael Young was the other Texas player to homer.

"We're really good all the way up and down," said leadoff hitter Ian Kinsler, who had two hits and walked twice. "One through nine, we're capable of scoring runs. Tonight we were able to put all together and string a bunch of quality at-bats back-to-back."

Texas finished with a season-high 21 hits, tagging Lester for eight of them before the Boston ace was pulled in the third inning.

"It was one of those nights where I flat out stunk," Lester said. "When I did make the adjustment and try and get back into the zone, it wasn't good enough. It wasn't a good night for me."

Lester had pitched well in his first two starts, but didn't have much run support.

The Rangers provided more than offense for Colby Lewis (2-0), who settled down after a shaky start and finished pitched seven solid innings.

It was the most home runs for the Rangers in a game since they hit six against Detroit in August 2008.

"I can't describe this one," Boston manager Bobby Valentine said, adding to what has already been a difficult week.

Boston star Kevin Youkilis struck out in all four of his at-bats. He did not play Monday because of a minor groin injury on a tense day at Fenway Park -- Valentine had apologized for remarks that criticized Youkilis.

The Rangers scored four times in the second and added three more in the third for a 7-2 lead.

They broke it open with an eight-run eighth that included a three-run homer by Hamilton and shots by Beltre and Cruz. The big inning came to an end when Beltre flied out and Boston fans gave the Red Sox a series of mock cheers.

Texas chased Lester (0-2) in the third after his control struggles left the bases loaded and nobody out. Lester threw 49 pitches in the second and allowed seven runs on eight hits and walked four. His ERA more than doubled, going from 2.40 to 5.82 by the time the Rangers were done with him.

The night had a promising start for Boston when the first three Red Sox got hits off Lewis. Mike Aviles led off with a single, then Dustin Pedroia homered.

It was a short-lived lead.

Cruz doubled with one out in the second and Napoli homered over the Green Monster. The Rangers added two more before Young, who led off the inning by striking out, ended it with a grounder to first. Young was the only Texas player not to reach base in the inning.

Lewis allowed just the two runs on Pedroia's homer, struck out seven and didn't walk anybody.

"He started keeping the ball down and changing speeds and really kept them off balance," Washington said. "To recover from that first inning the way it went just goes to show you the type of pitcher that Colby Lewis is."

Adrian Gonzalez added a solo homer for Boston in the eighth.

Game notes

Texas 1B Mitch Moreland returned to the club after having surgery on an infected abscessed tooth, causing him to miss two games. ... Darvish (1-0) is scheduled to start Wednesday against Boston RHP Josh Beckett (1-1). ... Boston OF Carl Crawford had four at-bats Tuesday in an extended spring training game in Florida for his first playing time since having surgery on his left wrist. Valentine said Crawford walked once, made contact the other three times and felt good afterward. ... Valentine said there is no timetable for the return of CF Jacoby Ellsbury, who is out with a partially separated right shoulder. ... Valentine let it slip that the Red Sox will be wearing throwback uniforms on Friday night when they host the Yankees on the 100th anniversary of the first game major league game played at Fenway Park. The Red Sox have not announced anything about the uniforms. ... Hamilton hasn't walked in his 46 at-bats this season and Young hasn't walked yet in 45.