CHICAGO — After two duds by the Cubs at Wrigley Field, Manny Ramirez and the Los Angeles Dodgers look ready to run Chicago's championship drought to 100 years.

Ramirez hit a mammoth homer to extend his postseason record, Russell Martin had a three-run double and the Dodgers took advantage of four errors by the clumsy Cubs in a 10-3 victory last night that gave them a 2-0 lead in the best-of-five NL Division series.

"It wasn't good baseball. In fact, the last two days, that's probably been the two worst games we've played all year," frustrated Cubs manager Lou Piniella said. "It wasn't fun to watch, I'll tell you that."

Chicago became the 23rd major league team to lose the first two games at home in a best-of-five playoff series, according to the Elias Sports Bureau. Only one has come back to win — the 2001 New York Yankees against Oakland.

Of course, that Yankees team was managed by Joe Torre, now in the Dodgers' dugout.

The series switches to Dodger Stadium for Game 3 tomorrow night. Rich Harden will face Hiroki Kuroda, who pitched a four-hit shutout against the Cubs in Los Angeles on June 6.

"We're going to come out and try to jump on them again at home. That would be nice," Dodgers starter Chad Billingsley said.

Just days ago, Cubs fans were excited about the team's chance to win its first World Series title since 1908. But suddenly, Chicago is on the brink of elimination. The Cubs must win two consecutive games in Los Angeles to get the series back to Wrigley.

"We've still got one more game to win," Ramirez said. "We're not there yet."

Billingsley shut down Chicago's slumping lineup and Ramirez's 26th postseason home run landed on the roof of the batter's eye club in center, at least 450 feet away. It was his second jaw-dropping shot in two nights.

On defense, the Cubs collapsed. All four infielders made an error, including two in the second that led to a five-run inning for Los Angeles. The four errors by Chicago tied a division series record.

Billingsley allowed five hits and a run in 6 2/3 innings to the Cubs, who haven't played like the team with the NL's best record or one that went 55-26 this season in its home park.

After losing 7-2 in Wednesday night's opener when starter Ryan Dempster walked seven, they played tight, even with ace Carlos Zambrano on the mound, dropping their eighth straight playoff game overall.

Billingsley said it "kind of" looks as though the Cubs are pressing.

"We took advantage of some of their mistakes and that's really big for us to do," he said.

Los Angeles got four unearned runs in the second when Chicago's defense faltered. Back-to-back errors by normally reliable Mark DeRosa and three-time Gold Glove winner Derrek Lee sparked the Dodgers' five-run inning capped by Martin's three-run double off Zambrano for a 5-0 lead.

"It allowed me to be more aggressive," Billingsley said. "I didn't have to be too fine and I was still attacking hitters and keeping them off balance. That was a big thing for me to get the off-speed across."

Chicago's third error, this one on third baseman Aramis Ramirez, allowed Billingsley to reach with two outs in the fourth.

Ramirez hit a solo shot in the fifth and Kemp had an RBI double off Neal Cotts in the seventh to put the Dodgers ahead 7-0.

Zambrano worked 6 1/3 innings, giving up seven runs — three earned — with seven strikeouts.

The Cubs' postseason losing streak dates to the 2003 NLCS. They squandered a 3-1 lead against Florida, losing Game 6 when they were five outs from the World Series. Chicago dropped three straight to Arizona in the first round last year and now is in jeopardy of being swept again.