BOSTON -- Philip Humber has been far from perfect this season. Now he doesn't know what to do next.
Humber had his second miserable first inning, allowing four runs as the Boston Red Sox rolled to a 7-2 win over the Houston Astros on Thursday night.
David Ortiz went 3 for 4 with a home run and two RBIs, boosting his batting average over .500 as the Red Sox won their eighth straight series opener.
Pitching one year and four days after his perfect game for the Chicago White Sox against Seattle, Humber (0-5) gave up seven runs, 10 hits and three walks in 4 2-3 innings. Humber, 2-3 with and 8.36 ERA in five career starts against the Red Sox, has allowed 12 first-inning runs in his last two starts, including four against Boston.
There were just a lot of pitches in the middle of the plate with nothing on them, he said of the initial inning.
After having three decent starts to open the season, he looks lost and is searching for a solution.
I'm just not making good pitches. It's not fun to go out there and get hit around like that, he said. Like I said, if I had an answer I would have done something different. Give credit to their hitters, they've got good hitters and didn't miss the pitches they should hit. It was pathetic. I didn't give our team a chance to win. Obviously the time before and today.
Astros manager Bo Porter felt like he needed to look at the tape first before passing judgment. It was kind of hard sitting in the dugout where we're sitting at. It's hard to see location, he said.
But, regardless, Humber looked very down afterward.
I don't know. I really don't, he said, when asked what he felt like he could do before the next start.
Ortiz, who also scored three runs, is 11 for 20 (.550) with five RBIs since returning last weekend. He missed 71 of last year's final 72 games and most of the first three weeks this season because of a heel injury.
Boston has won 10 of its last 13 and taken the first eight series openers of a season for the first time in team history.
Clay Buchholz (5-0) allowed two runs and six hits in 7 2-3 innings with 10 strikeouts and two walks. His ERA rose from 0.90 to 1.19.
Buchholz became the first Boston pitcher to win his opening five starts since Josh Beckett in 2007 -- when the Red Sox went on to win the World Series.
Houston dropped to 7-15, the Astros' worst start since opening with the identical record in 1975, according to STATS.
Ortiz and Dustin Pedroia hit run-scoring singles in the first, when Mike Carp added a two-out RBI double and scored on Jarrod Saltalamacchia's single.
Houston closed to 4-2 on run-scoring singles by Fernando Martinez in the second and Jason Castro in the third.
Ortiz homered into the center-field bleachers in the third, his first since July 13 against Tampa Bay's Jeremy Hellickson and his first at Fenway Park since June 27 off Toronto's Jesse Chavez.
Saltalamacchia hit a run-scoring single in the fifth and scored on a double by Will Middlebrooks, Humber's final batter.