HOUSTON -- Astros catcher Humberto Quintero left Sunday's game in the fourth inning after he was hit in the side of the head by Rangers shortstop Andres Blanco's backswing.

Quintero received seven stitches to his head and was sent to the hospital to receive X-rays. Those X-rays were negative. After the game, he was in the clubhouse and in good spirits.

"I feel fine," Quinetero said. General manager Ed Wade said Quintero needed the stitches because the inside of his catching helmet cut his head.

On the play, Blanco swung and missed, and as he extended his bat, it caught Quintero's helmet. Quintero laid on the ground for a few minutes as he was examined by Astros trainers. He later walked off the field under his own power. Kevin Cash replaced Quintero.

Quintero was also hit in the head on a backswing by the Dodgers' Luis Maza on July 1, 2008, and suffered a concussion. He went on the disabled list from July 2-22 that year.

Astros slot Berkman into No. 2 hole

HOUSTON -- Astros manager Brad Mills slotted first baseman Lance Berkman second in the Astros' batting order Sunday. Berkman, who normally hits third, said the last time he hit second was in 2004. He didn't have a problem with the move, though.

"I mean, why not?" Berkman said. "I'll hit eighth, I don't care."

Mills said he considered hitting shortstop Tommy Manzella second, but ultimately, Berkman's patience at the plate was important at the top of the order. Berkman is 1-for-6 in the series entering Sunday.

"He's still getting his walks," Mills said. "I'm hoping he'll get some fastballs to hit, and hitting second in the order, that might help him."

Norris to make third rehab start

HOUSTON -- Astros righty Bud Norris will make his third rehab start Tuesday with Triple-A Round Rock. Norris has been on the disabled list since May 24 with bursitis and biceps tendinitis.

"He feels fine, health-wise," Mills said. "I think we want to make sure he's not only 100 percent healthy, but he has 100 percent confidence. I think going on one more rehab stint will cement him."

In his second rehab start, Norris pitched 4 2/3 innings and gave up eight hits, five runs and three walks. He threw 86 pitches. In his first rehab start June 12, Norris threw four scoreless innings.

"The day after the side [bullpen session], I felt good," Norris said. "I'll go out there and play catch and hopefully feel good again."

Astros reliever Chris Sampson will make a rehab appearance for Round Rock on Sunday. The appearance will be the third for Sampson, who has been on the DL since June 1 with rotator cuff tendinitis. General manager Ed Wade said if all goes well, Sampson could rejoin the club Tuesday.

Bourn gets scheduled day off

HOUSTON -- Center fielder Michael Bourn was out of the lineup Sunday against the Rangers as part of a scheduled day off. Second baseman Jeff Keppinger hit in Bourn's leadoff spot.

Bourn had one of the Astros' two hits Saturday against Rangers starter Colby Lewis. In the seventh, Bourn sliced a double down the line and later scored the only Astros run on a wild pitch by Lewis.

"He came in early and worked on some things," Astros manager Brad Mills said. "He had some better at-bats. Having him on base sure is nice."

After getting off to a hot start through the first two months, Bourn has cooled off in June, hitting just .203 this month. He said Saturday's game was a step in the right direction.

"I'm not pushing the panic button," Bourn said. "I just have to work through it and take it day by day. Sometimes it's going to test you, but you really have to dig in."

Worth noting

Saturday's crowd of 41,060 marked the second sellout of the season and first since Opening Day. ... Reliever Wilton Lopez has stranded a Major League-best 18 inherited runners this season. ... The Astros are 17-1 when leading after seven innings and 20-1 when leading after eight innings.