CHICAGO -- Jacob Arrieta, slotted to pitch Game 4 for the Cubs in the National League Division Series presented by T-Mobile to give him more time to heal a sore right hamstring, tuned up with a bullpen session Wednesday at Wrigley Field.
The Cubs announced that Kyle Hendricks will start the opener of the best-of-five series against the Nationals tonight and be followed by Jonathan Lester in Game 2, then Jose Quintana in Game 3 and Arrieta.
"We moved Jake to the back to make sure we give the leg as much time as possible to heal," manager Joe Maddon said Wednesday.
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Maddon admitted that if Arrieta had been 100 percent healthy, the order might have been different. The right-hander isn't the only starter who's had to deal with injuries this year. Hendricks missed time because of a right hand strain and Lester was sidelined because of left shoulder fatigue.
Where does John Lackey fit? Neither Maddon nor Cubs president of baseball operations Theo Epstein was ready to say on Wednesday. The staff met to discuss the roster before a workout at Wrigley Field.
"We're looking at [Lackey] as certainly a viable option out of the 'pen," Epstein said.
Said Lester: "I've seen 'Lack' come out of the bullpen and get a hold in a World Series game before. That's one person I'm not worried about."
The Cubs have yet to decide how they will break down the roster, but Epstein said they did discuss how the Cubs match up against the Nationals.
"Now it's a matter of sleeping on it and making decisions [Thursday]," Epstein said.

• In 1982, Maddon was the Minor League manager for Salem, and one of his players was a feisty third baseman named Mike Rizzo, who now is the general manager of the Nationals.
"Riz started a tremendous fight that we had versus the Bend, Ore., Phillies," Maddon said. "There was a play at the plate, ended up against the backstop, Riz is in the middle of the whole thing. That's who he was -- he was a gritty player."
The two will have a chance to catch up during the NLDS.
"There's a really good urban legend about a player who is no longer heard from after Rizzo had been released in Spring Training," Maddon said. "The guy chosen in front of him was no longer to be found right after that. The next day, Rizzo was reinstated."
• Quintana, Wade Davis, Justin Wilson and Brian Duensing were among the pitchers who got work in during a sim game on Wednesday at Wrigley Field.

• The Cubs claimed right-hander Luke Farrell off waivers from the Reds. Right-hander Felix Pena was designated for assignment to make room on the 40-man roster. Farrell is the son of Red Sox manager John Farrell, and the Cubs already employ his brother, Shane, in the scouting department.
"Luke pitched real well down the stretch," Epstein said. "We're always looking for starting depth. He's a great kid. He had a really good year in the Minor Leagues and showed some promising things in the big leagues."
Luke Farrell, 26, had a combined 5.54 ERA in 10 games, including one start, for the Royals and Reds this year. He compiled a 2.61 ERA in nine games in relief for the Reds.
• Fans can watch the Cubs play the Nationals in Games 1 and 2 of the NLDS on the large video board at the Park at Wrigley tonight and Saturday. Tickets are $10, and proceeds will benefit Cubs Charities. The gates to the area will open one hour before the start of the broadcast. Fans can purchase food and beverages. Limited parking is available at the Toyota Camry Lot at 1126 W. Grace Street.