CHICAGO -- The best way for Junior Lake to learn how to play the outfield is by playing.
Lake, who had been an infielder primarily coming up through the Cubs' system, has played only in the outfield since he was promoted on July 19.
"You can't replace the reps in a game in center field and the outfield," Cubs manager Dale Sveum said. "You can kind of simulate infield because of ground balls, but the outfield, it's very difficult to simulate balls over your head and in the gap and other outfielders running for the same ball. Outfield is a lot of reps to get going out there."
The Cubs are hoping Lake gets more playing time in the outfield in winter ball. Sveum wouldn't rule out having the athletic Lake switch to third if needed.
"He's the kind of guy you want covering a lot of space," Sveum said. "It looks like he can go get 'em."
Lake is the first Cubs player to begin his big league career with a seven-game hit streak since Jerome Walton did so in 1989. Lake had 15 hits in his first seven games, the most by a Cubs player since at least 1916. He still has some things to learn at the plate.
"That's always going to be the biggest thing, is getting good pitches to hit and not be in a panic, because a guy like him has bat speed," Sveum said. "It's all a learning process to face this kind of pitching on an everyday basis."
Sveum expects Samardzija to stay with Cubs
CHICAGO -- The non-waiver Trade Deadline is Wednesday at 3 p.m. CT, and manager Dale Sveum doesn't expect Jeff Samardzija to be doing anything but prepping for his next start with the Cubs.
Rumors continued to swirl Tuesday about the Cubs listening to offers for Samardzija.
"If somebody asks, sure," Sveum said on whether the Cubs were keeping an open mind. "That's not my job, so I don't know what goes in those kind of meetings. It's not realistic [to deal Samardzija]."
The Cubs would have to be offered a lot to part with the 28-year-old right-hander who is under team control for two more years.
"This is me speaking, but I would think it's very, very far-fetched to think that you have a guy under control for that long, and possibly a No. 1 guy, to do anything with him," Sveum said. "Those are things that pop up and somebody will say, sure, you'll listen. But are you going to want to trade half your team [to get Samardzija]?"
Meanwhile, Kevin Gregg and Nate Schierholtz wait to see if they will stay with the Cubs past the Deadline.
"It is a compliment to be rumored," Sveum said. "Some people get to be part of a pennant race and get to the playoffs and do some fun things."
The Cubs have been the most active team this month, trading Alfonso Soriano, Scott Feldman, Matt Garza, Scott Hairston and Carlos Marmol, as well as moving some Minor Leaguers. A year ago, they acquired Arodys Vizcaino, who is still rehabbing from Tommy John surgery on his right elbow, from the Braves in the Paul Maholm deal. Vizcaino is projected to be a top starter when healthy.
Right-hander C.J. Edwards, acquired from the Rangers in the Garza deal, had a stellar debut for Class A Daytona on Sunday, striking out the first seven batters he faced.
"When you do [make trades], you want quality players," Sveum said. "I think we got some quality arms. C.J. Edwards struck out the first seven guys he faced the other day. These are the kind of replacements and pieces you want to get in return -- [guys] who can possibly be impact players."
Cubs have no need for Baker to rush rehab
CHICAGO -- Scott Baker can take his time rehabbing from Tommy John surgery. The Cubs had hoped the right-hander would be a part of their starting rotation this year, but there isn't as much of a need as last season when they were scrambling to find starters.
In his fourth rehab start on Monday, Baker gave up two runs, one earned, on three hits and two walks over 3 1/3 innings for Class A Daytona against Fort Myers. Baker threw 65 pitches, struck out two and served up a solo home run to Matt Koch in the fourth.
In three previous rehab outings with Class A Kane County, Baker was charged with 13 runs on 17 hits and six walks over 8 2/3 innings.
Cubs manager Dale Sveum said Tuesday that Baker's velocity was a little better in Monday's outing.
"Sixty-five pitches in 3 1/3 innings, that's 20 pitches per inning again," Sveum said. "He's still not getting quick outs and what you want done in a 65-pitch outing."
The Cubs have dealt two-fifths of their rotation -- Matt Garza and Scott Feldman -- but were better prepared this season to fill the gaps, inserting Carlos Villanueva and promoting lefty Chris Rusin. Jake Arrieta, acquired from the Orioles in the Feldman deal, will start the second game of the Cubs' doubleheader on Tuesday.
"We're not too concerned [about Baker], because right now, we don't have a need right now, and we're OK with everything," Sveum said. "It's just kind of a slow development for him right now. We don't have a big need right now for a starting pitcher and we're OK with things progressing at a slow rate."
• The Cubs recalled right-hander Jake Arrieta from Triple-A Iowa, and he will be the 26th man for Tuesday's doubleheader against the Brewers. Arrieta will make his Cubs debut, starting the second game of the twin bill.
Arrieta, 27, was the Orioles' Opening Day starter in 2012. He was acquired from Baltimore as part of the Scott Feldman deal on July 2. In five starts at Iowa, Arrieta was 1-2 with a 4.03 ERA.
• Tuesday's day-night doubleheader was the Cubs' first at Wrigley Field since June 28, 2011, when they played two against the Giants.
• Dae-Eun Rhee gave up two runs over 6 1/3 innings in Double-A Tennessee's 8-4 win over Birmingham on Monday. Brett Jackson, the Cubs' No. 1 Draft pick in 2009, who is coming back from a right calf injury, was the designated hitter. He went 1-for-4 and scored a run.
• Anthony Rizzo will host his first "Cook-Off for Cancer" on Aug. 14 at Cafe Brauer in Chicago. Notable Chicago chefs will prepare ballpark food as only they can, and the dishes will be served by Cubs players. Guests will vote for their favorite chef by tipping their Cubs server. All tips and event proceeds will benefit pediatric cancer research, care and support. The event will take place from 6-10 p.m. CT. Among the chefs participating are Giuseppe Tentori of GT Fish and Oyster; Tony Priolo of Piccolo Sogno; Nate Henssler of Joe's Seafood, Prime Steak & Stone Crab; Cosmo Goss of Publican; Jimmy Bannos of the Purple Pig; Mark Sparacino of Prosecco; and David Burns, Wrigley Field's executive chef. Tickets are $200, and they are available on Cubs.com/cook.
Rizzo also will celebrate being cancer free for five years when he hosts his second Walk-Off for Cancer on Dec. 15 in Parkland, Fla., at Pine Trails Park. The walk will begin at 9 a.m. ET.
Carrie Muskat is a reporter for MLB.com. She writes a blog, Muskat Ramblings, and you can follow her on Twitter @CarrieMuskat. This story was not subject to the approval of Major League Baseball or its clubs.