Clayton Kershaw threw 86 pitches. (Chattanooga Lookouts)

MINNEAPOLIS -- With a likely return to the rotation next week in Washington, Dodgers ace Clayton Kershaw made his second Minor League rehab start Wednesday night, throwing five innings for Double-A Chattanooga.

Kershaw threw 86 pitches, more than manager Don Mattingly's pregame target of 75-80, and he struck out nine with two walks. He was charged with two runs (one earned) on six hits. Three errors committed behind him helped run up his pitch count.

"I think it went all right. I got my pitch count up there," Kershaw said after the game. "With 87 [pitches], I would have liked to get through six or seven, but the goal was to get the pitch count up there," Kershaw said. "It's always hard when pitch counts are in the back of your mind, but the goal is to get the pitch count up there so that I'll be ready to throw 100-plus pitches in the big leagues.

"At the same time, you're trying to compete, too. It's a little bit of a balance, but fortunately for me, I'm done with that and I can just go out there and pitch now."

Broadcasters for Double-A Chattanooga said that Kershaw's fastball hovered around 89-90 mph and occasionally reached 92-93.

Kershaw has been on the disabled list since the day after a winning start Opening Night in Australia with a strained Teres Major muscle in his upper back.

"I've learned I don't like it," Kershaw told The AP about his DL stint. "As much as you try and be a part of this team, our team is playing right now while I'm in Chattanooga. It's a weird process for me, and you kind of feel isolated a little bit. Hopefully I never have to do it again."

The first inning was tough for Kershaw, who walked the first batter and had to make 29 pitches to get the three outs, all on strikeouts. He also allowed an RBI double, with a pair of errors made behind him.

Kershaw was accompanied on the trip by, among others, head trainer Stan Conte and special assistant Pat Corrales.

Dodgers bring up Olivo, option Federowicz

OAK@LAD: Olivo's bases-clearing double extends lead

MINNEAPOLIS -- Manager Don Mattingly said Wednesday's demotion of catcher Tim Federowicz should be considered part of the "maturation process" of a young ballplayer.

Federowicz, batting .109 after 13 games, was optioned to Triple-A Albuquerque and replaced by 10-year veteran Miguel Olivo, whose contract was purchased from Albuquerque.

To make room on the 40-man roster, pitcher Chad Billingsley was moved from the 15-day disabled list to the 60-day disabled list. That move is procedural as Billingsley had a setback in his recovery from Tommy John surgery.

Mattingly said Federowicz was pressing after given a chance to start regularly following A.J. Ellis' knee surgery.

"He did try to do too much," said Mattingly. "He said as much to me today. It's a lot like Dee [Gordon]. It's the process of being a young player. There are very few able to take a job a run with it and never go back down, like Yasiel [Puig] taking the game by storm. It's the maturation process."

Olivo has an out clause in his contract that would allow him to become a free agent if the Dodgers didn't add him to the Major League club.

He has a .241 career batting average with 145 home runs and 488 RBIs. In 15 games at Albuquerque, he hit .390 with four homers and 18 RBIs. As a non-roster invitee with the club in Spring Training, Olivo batted .263 (5-for-19) with two doubles and three RBIs.

Haren to start Game 1 of twin bill

PHI@LAD: Haren fans seven over six innings of work

MINNEAPOLIS -- Dan Haren will start the first game of Thursday's split doubleheader for the Dodgers, manager Don Mattingly said Wednesday, and a callup from Triple-A Albuquerque will pitch the second game, but he wouldn't confirm it will be Red Patterson.

The Dodgers are allowed to add a 26th player for the doubleheader. Patterson was scratched from Tuesday night's start for Albuquerque, so he is the most likely spot starter. He would need to be added to the 40-man roster, with someone else being moved off.

"It doesn't cost anything to use the 26th man," Mattingly said.

Because of the doubleheader, the Dodgers would need to add a starting pitcher by Sunday to avoid bringing back Wednesday night's starter, Zack Greinke, on short rest.

With a callup to follow Haren on Thursday, Josh Beckett would likely start in Miami against his former team on Friday, followed by Paul Maholm on Saturday and Hyun-Jin Ryu on Sunday. Each would be starting on two extra days of rest.

Dodgers promote Patterson to start Game 2

SEA@LAD: Patterson strikes out Taylor to end ninth

MINNEAPOLIS -- The Dodgers named Red Patterson to start the second game of Thursday's doubleheader against the Twins. It will be his Major League debut.

Patterson, 26, was promoted from Triple-A Albuquerque to be the 26th man on the active roster, which is allowed for doubleheaders. A non-roster invitee to Spring Training, Patterson was added to the 40-man roster Thursday, with outfielder Nick Buss designated for assignment.

Patterson was 1-1 with a 4.15 ERA with Albuquerque, and he was promoted over Stephen Fife and Matt Magill, both of whom were already on the 40-man roster. Both also have Major League experience, but they have been struggling in the Albuquerque rotation.

The move was necessitated by Tuesday night's rainout and will eliminate the need for Zack Greinke -- Wednesday night's starter -- to start Sunday on short rest. Scheduled to pitch in the upcoming series in Miami are Josh Beckett on Friday, Paul Maholm on Saturday and Hyun-Jin Ryu on Sunday. Each would be starting on two extra days of rest.

Patterson will wear uniform No. 51.