HOUSTON -- The Cleveland Indians broke out of their offensive slump in a big way on Saturday night.
Now manager Terry Francona is hoping his team can keep it up.
"We did a good job tonight," Francona said. "The idea now is to be consistent. You're certainly not going to put up those kind of numbers nightly, but try to bounce back tomorrow and go get them again."
Giambi had five RBIs and Reynolds drove in four runs, but Scott Kazmir was unable to get the win in his first major league appearance since he recorded five outs in a start for the Los Angeles Angels at Kansas City on April 3, 2011. The left-hander allowed six runs and seven hits in 3 1-3 innings.
Cleveland roughed up Philip Humber (0-4) and finished with 22 hits while stopping a five-game slide. It was the highest-scoring game for the Indians since a 19-1 victory at Kansas City on May 16, 2011, and their most hits since they had 25 in a 22-4 win at the New York Yankees on April 18, 2009.
Humber recorded just one out on the eve of the anniversary of his perfect game. He was charged with eight runs and eight hits.
"It's tough to make any adjustments," he said. "It seemed like they were jumping on the first thing I threw over the plate every time and hitting the ball hard."
The Indians managed just 11 runs and 33 hits during their losing streak. The 42-year-old Giambi was 1 for 12 for a .083 batting average coming into the game. His big day raised his average to .188.
Corey Kluber (1-0) pitched four innings of two-hit ball to get the win.
The Indians had nine consecutive batters reach with one out in the first. Giambi belted a two-run double and Reynolds hit a three-run shot.
"I think it helps guys feel better about themselves," Francona said. "I thought they did a good job of that going into the game, but I do think it helps guys loosen up a little bit."
Indians shortstop Asdrubal Cabrera left in the middle of the first inning with a bruised left wrist. Francona said he was injured about five minutes before the game when he slipped down the stairs in the dugout and broke his fall with his left hand. X-rays were negative, and Francona said he was already feeling better after the game.
Nick Swisher tied a career high with four hits, including a career-best three of Cleveland's seven doubles, and Brantley added three RBIs.
"It was finally nice to go out there and relax and know we were in control of the game and just have some fun," Reynolds said. "It's what we talked about before the game was just to have fun."
It was the most runs and hits allowed by Houston since Colorado had 25 hits in a 19-3 victory on Sept. 25, 2011.
Kazmir pitched last season in nearby Sugar Land, Texas for the Skeeters of the independent Atlantic League before signing a minor league contract with the Indians in January.
The 29-year-old started the season on the disabled list with a rib cage strain. He grew up in Houston and Saturday was his first career game at Minute Maid Park.
"I was a little jittery, I definitely had some nerves going," he said. "Overall, stuff I can take out of this start and bring into my next start is what not to do, I guess. I just kind of never really got into the swing of things, the flow of the game throughout my whole outing."
NOTES: It was Giambi's 431st homer, moving him into a tie for 42nd on the career list with Cal Ripken, Jr. ... Humber pitched the 21st perfect game in major league history on April 21, 2012, for the White Sox against the Seattle Mariners. ... These teams wrap up the series on Sunday when Cleveland's Ubaldo Jimenez opposes Erik Bedard. ... RHP Brett Myers will fly back to Cleveland on Sunday for tests on his sore throwing arm. Myers lost Friday night's game and said afterward he has been struggling with tendinitis in his arm this season. ... Houston placed OF J.D. Martinez on the 15-day disabled list with a right knee sprain and activated outfielder Fernando Martinez from the DL. ... Cleveland optioned INF Cord Phelps to Triple-A Columbus before the game.