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8/2/2014 2:45 A.M. ET

A-Gon, Puig, Maholm all exit with injuries

LOS ANGELES -- Not only did the Dodgers fall to the Cubs, 8-2, Friday night, but they added injury to the insult with Adrian Gonzalez, Yasiel Puig and left-hander Paul Maholm all exiting the game.

Gonzalez (right knee contusion) and Puig (mild left hamstring soreness) are both day to day, manager Don Mattingly said. But Maholm could potentially miss a significant stretch of time, as he heard a pop in his right knee as he went to cover first base on an inning-ending groundout in the seventh inning.

After head athletic trainer Stan Conte examined him, Maholm was able to walk off of the field on his own power, but he was on crutches after the game and went to get an MRI on the knee.

"Paul's is the one that's pretty serious, it seems, like the way he came off the field and was moving around," Mattingly said. "He felt it the step before he got to the bag. He was walking good, but then we he got to the steps, it kind of gave out."

Maholm pitched two innings and threw 31 pitches in the outing and has been a long reliever and spot starter for the Dodgers this season. He was relieved by right-hander Brian Wilson in the eighth.

In the beginning of the seventh -- before Maholm's injury -- Andre Ethier subbed into center field, replacing Puig.

"I think Yasiel's got a sore hamstring," Mattingly said. "I'm not sure when it happened. I think he told Stan leaving first base in the same inning, and he'll be day to day. We'll see where he's at tomorrow."

Gonzalez suffered a right knee contusion in the bottom of the first inning on a play at home that was ruled an out and upheld by a crew-chief review.

Gonzalez said his knee bounced off of the clay around home plate -- causing him to miss the plate on the slide and creating some temporary numbness.

Already dealing with a sore back, Gonzalez left the game in the top of the third, replaced by Scott Van Slyke at first base.

"He wasn't really feeling terrible after the game," Mattingly said. "He's got some soreness. He'll be stiff or whatever, but he'll be day to day."

However, Mattingly said that Gonzalez would likely have gotten Saturday off, regardless, as the Dodgers will be facing left-hander Tsuyoshi Wada.

There was an additional Dodger injury Friday -- on the coaching staff -- but Mattingly wasn't concerned.

"Davey Lopes slipped on the steps," he said, cracking smile. "But he's OK.

"He slipped twice actually."

Mattingly puts Dodgers' hot stretch in perspective

LOS ANGELES -- Last year, the uphill climb started on June 22. This year, on June 8. In both cases, the Dodgers were out 9 1/2 games in the National League West standings.

In 2013, the Dodgers went on a historic 42-8 run and finished the season 11 games up. The book isn't yet closed on this season, but the Dodgers enter Friday night's series opener with the Cubs at a season-high 3 games ahead of the second-place Giants.

While they haven't put together a 50-game run quite like last season's, the Dodgers are undeniably hot, riding a season-high six-game winning streak after not winning -- or losing -- three in a row the entire year.

How does this season's Dodgers run stack up?

"I didn't really notice it last year, honestly, that we went on that kind of run," manager Don Mattingly said Friday. "We were just kind of going day to day and kind of grinding it out. The similarities for me this year with last year is really us getting down a lot [in the standings].

"It seemed like earlier this year we got back in it, and once we got back in it, I felt pretty confident that we were going to at least be in the race. We didn't get into too much trouble there early."

And as of late, there's hardly been any trouble at all. The Dodgers went to San Francisco last weekend and swept a first-place Giants team to take the division lead, and they followed that series up with a three-game sweep of a tough Atlanta Braves team.

"I don't feel a whole lot different because it's just happening recently," Mattingly said of his team's run. "We hadn't won more than three or lost more than three, which kind of shows you we've been fairly consistent, we just haven't been on any kind of run. The San Francisco series, it felt like it gave us a little confidence.

"Hopefully, we just ride now."

Gordon, Ellis in lineup despite being banged up

LOS ANGELES -- Despite suffering injuries in Thursday night's 2-1 win against the Braves, both second baseman Dee Gordon and catcher A.J. Ellis were in Don Mattingly's starting lineup Friday.

With a swollen right knee after Thursday's game, Ellis' status was most in doubt. He took a foul ball off of the knee in the seventh inning but continued to catch the final two innings of Clayton Kershaw's complete-game win.

Whether Ellis would remain in Friday's starting lineup was contingent on how he came through batting practice.

"They sounded pretty positive that he'd be able to stay in it," Mattingly said.

As for Gordon, who landed awkwardly on his right shoulder making an acrobatic throw in the fourth inning Thursday, there was little doubt regarding his status.

"I haven't heard anything about it after that," Mattingly said. "Obviously, last night he was kind of shaking it, but nobody said a word after that."

Mattingly said closer Kenley Jansen would be available Friday after getting a rest Thursday night. Justin Turner got the start at third base over Juan Uribe, but Mattingly said it was just a day of rest for Uribe -- a luxury the manager can afford now that his starting lineup is, for the most part, finally healthy.

"I do like to be able to know what you're going to do and knowing that you're going to try to give different guys a good stretch here, hopefully," Mattingly said.

Michael Lananna is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.