PHOENIX (AP) -- This time, Omar Daal got plenty of support from his Arizona Diamondbacks teammates.

Arizona manager Buck Showalter got his 500th career victory as Travis Lee and Andy Fox each had four RBI Monday night to lead the Diamondbacks to a 15-7 rout of the Los Angeles Dodgers.

Daal (1-3), a 16-game winner a year ago, lost a couple of close games early in the year and then fell victim to the sports' epidemic of home runs in recent starts. He has given up seven homers in his last three games, including two-run shots in this one by Adrian Beltre and Todd Hundley.

"Finally, I helped the team for the first time this year," he said.

"It was good to get Omar some runs to work with," Showalter said. "It gave him a little margin for error."

Showalter, who began his managerial career with the New York Yankees, improved his career record to 500-437.

"I think it's great that Buck got his 500th win," Fox said. "You know, being an ex-Yankee and starting in the Yankee organization, I think it's kind of fitting."

Arizona, which won its fifth straight, scored five runs each in the first, fourth and fifth innings, and had 20 hits, tying the team's high for a nine-inning game.

The Diamondbacks, who started play in 1998, set a season high for runs and at 22-10 surpassed Atlanta (21-10) for best record in the National League.

"I think you could walk around this locker room and ask people, and no one would know that," Showalter said. "We're only a sixth of the way through the season, and we've got a lot of roads to cross before that means much."

Steve Finley and Fox hit two-run homers in the fifth inning, and Tony Womack hit a solo homer in the fourth. Finley's was his 12th, leaving him tied with St. Louis' Mark McGwire and Chicago's Sammy Sosa for the NL lead.

Fox, who broke his left thumb during spring training and didn't return until April 17, was 4-for-5, including RBI singles in the first and fourth. Lee was 3-for-4 with a two-run single in the first and a two-run double in the fourth.

Lee batted sixth and Fox eighth, and Finley said that was a key for the team's early success.

"We throw out a pretty consistent lineup from top to bottom every night, whether we're facing a righty or a lefty," Finley said. "We're going to put our swings on the ball."

Daal allowed six runs and six hits in seven innings.

Chan Ho Park (3-3) was pounded for eight runs and nine hits in 3 1/3 innings.

Reliever Matt Herges, who had not allowed an earned run in 19 1/3 innings over 12 relief appearances this year, gave up seven runs in 1 2/3 innings.

"The floodgates were open, and I didn't shut them," Herges said. "They were confident, and they were just raking it."

Arizona took a 5-0 lead in the first on an RBI groundout by Luis Gonzalez, Lee's two-run single and RBI singles by Fox and Daal.

Hundley's homer in the fourth closed the gap to 5-4, but the Diamondbacks scored 10 unanswered runs before Beltre drove in a run with a sixth-inning groundout.

"We knew there was a second chance to get back in the game, but then they started scoring five runs every two innings," Beltre said.

Game notes
Showalter is 186-169 with the Diamondbacks. ... Fox had four RBI and four hits for the second time in his career. He drove in four runs at St. Louis last July 4, and his first four-hit game was against Chicago on July 28, 1998. ... Erubiel Durazo went 0-for-4 after two walks, ending his 10-game hitting streak. ... Arizona closer Matt Mantei, on the disabled list for the second time to build up muscle in his right shoulder, threw about 30 pitches before the game.