Jason Phillips had knocked in a first-inning run and recently-recalled Mike Edwards and Jeff Kent homered to give the Dodgers a 3-1 lead on Mark Prior.
But the bottom of the inning was a nightmare as a crucial misstep cost three runs and turned the game around.
Penny sailed into the inning having allowed only three hits and a single run, a homer into the right field seats by Nomar Garciaparra.
Ron Cedeno opened the inning with an infield hit to shortstop Oscar Robles. Derrek Lee, who was 0-for-5 in the series, shot a double just inside the bag at third base to put runners on second and third.
Jeromy Burnitz, who homered twice and doubled in the first game of the series, had an even more damaging blow -- a little trickler past the mound. Brad Penny went after the ball, then slipped down to one knee and when Jason Phillips fielded the ball, there was no one covering first base as Cedeno scored from third.
That should-have-been out allowed two more Cubs to come to bat in the inning and three runs scored because of it.
Garciaparra hit a sac fly to tie the game, Todd Walker singled and Matt Murton hit into a force play, which should have ended the inning. Instead it allowed former Dodger Henry Blanco to come to bat and he slashed a single good for two runs and, as it turned out, the game.
That ended Penny's night having allowed eight hits and five earned runs in 5.2 innings. Elmer Dessens got the final out to end the inning.
Blanco squeezed in a run in the ninth off reliever Yhency Brazoban.
The Dodgers were again streaky, collecting five hits in the first two innings, then the next ten batters went out in order. After Kent's homer (#24) in the sixth and a single by Ricky Ledee, 11 Dodgers marched up to the plate and back into the dugout in succession.
Robles singled, Kent doubled and with two out, Phillips singled for one run but Kent was out in a rundown between third and home. Edwards homered (#2) and Dioner Navarro singled in the second.
With two out in the ninth, Navarro doubled and Jose Cruz singled but pinch-hitter Olmedo Saenz lofted an easy fly to left ending he game.
Bradley's Troubles--A Los Angeles paper reported that police have been called to Bradley's home three times this summer for alleged domestic violence. The paper reported that no arrests were made or charges filed in response to the incidents. Bradley issued a statement through the club publicity department Tuesday: "The events written about are very regrettable. Any problems reported have been exaggerated but nonetheless, my wife and I have resolved all issues. The incidents reported will remain private and personal. At this time, I am choosing to handle this matter and all future matters directly and confidentially with the Dodgers. While I continue to work on my off-the-field issues, my energy is also directed towards preparing for season-ending knee surgery and a lengthy rehabilitation."
Dodger Blue Notes-- The Cubs traded former Dodger Rookie of the Year Todd Hollandsworth to Atlanta Braves after the Monday game. …Ricky Ledee left Monday night's game in the third inning with a sore hamstring but started last night and singled in four trips. Dodger trainers were hopeful the pain Ledee felt was scar tissue breaking away. Ledee had surgery on the hamstring in 2000 but said it has never bothered him chronically the way it has this year. Off-season surgery is still a possibility. …A book is being written to commemorate Dodgers broadcaster Rick Monday's dramatic rescue of the American flag at a Dodger Stadium game in 1976 while playing for the Cubs. …The Dodgers loss gave Chicago the season series. The Cubs lead 4-1 with one game to play. …Jeff Kent drove in his 89th run of the season with a home run and 81 of them have come as a second baseman. He is only three shy of the Los Angeles Dodgers single-season record at the position set by Charlie Neal in 1959. Before you even ask, Davey Lopes knocked in a career-high 73 in 1979. Jackie Robinson has the franchise record of 124, set in Brooklyn in 1949 during his MVP season. …Derek Lowe starts against the Cubs in the final game of the series and then the Dodgers move on for three games in Colorado.