Manager Rick Renteria comforts Travis Wood while taking him out.

MESA, Ariz. -- Travis Wood is hoping the Cubs get all the dropped balls and strange plays out of their system this spring.

In Tuesday's 13-0 loss to the Rockies, the Cubs lefty was charged with five runs on nine hits over 2 2/3 innings, with two runs scoring on singles that never left the infield. The Rockies took a 1-0 lead in the first, and with two outs in the third, Nolan Arenado was credited with a triple on a ball that center fielder Junior Lake lost in the sun.

Wood gave up hits to the next five batters, including a two-run homer to Kyle Parker, before he was lifted.

"It's going to happen, it's part of baseball," Wood said of the dropped fly ball. "You see it every year. I've got to come back and help him out of the inning. I felt I made some good pitches, and they put some good swings on them."

The Rockies also got a couple of breaks. Wood could only shrug after his outing.

"I said it's just one of those days," the lefty said. "Luckily, it happened in spring, so we can move forward from that and get ready for the next one."

E. Jackson to stay on pace, meet with Renteria

Outlook: Jackson looks to rebound in 2014

MESA, Ariz. -- Edwin Jackson will face Minor League hitters on Wednesday at the Cubs' complex to stay on schedule, while James McDonald gets the start that night against the Mariners.

Cubs manager Rick Renteria said Tuesday he has yet to talk to Jackson since his last Cactus League start on Friday, when the right-hander decided to only throw fastballs but didn't tell either the manager or pitching coach Chris Bosio. Jackson gave up three runs on four hits over three innings against Cleveland.

"I'm sure we'll have the discussion, and that will be between me and him," Renteria said.

McDonald, bothered last season by shoulder issues, was scheduled to go three innings on Wednesday against the Mariners.

Looking ahead, Jeff Samardzija and Travis Wood are expected to start Saturday and Sunday in split-squad games against the Royals and Indians, respectively, while Carlos Pimentel and Chris Rusin will get the assignments over the weekend in Las Vegas against the Mets.

Rusin, a candidate for the Cubs' fifth spot in the rotation, threw three hitless innings on Monday against the Giants. The lefty was so efficient that he needed to finish his work in the bullpen.

Extra bases

James Russell, slowed this spring because of a tired arm, will make his Cactus League debut on Wednesday in the Cubs' game against the Mariners. Russell has appeared in more than 70 games in relief in back-to-back seasons, and Renteria said he is very cognizant of a pitcher's usage. The Cubs do have another lefty, Wesley Wright, who could pick up some of the workload for Russell during the season.

Javier Baez is taking ground balls at second and third before batting practice, and Renteria will try to get the Cubs' top prospect at one of those positions in a Cactus League game soon but is looking for the right shortstop to match up with. Baez will open the season at Triple-A Iowa at shortstop.

"We're going to make sure when we do put him there we're really comfortable and confident he can handle that side of the diamond," Renteria said. "I think it's pretty close."

Darwin Barney started his second game at shortstop on Tuesday, and Renteria said that would be the most likely pairing with Baez because they want someone with experience.

Mike Olt, who has not started at third to protect a tender right shoulder, is "getting close" to playing there in a Cactus League game. Olt did make a perfect throw on a double play in Monday's game against the Giants, which impressed Renteria.

• Shortstop Starlin Castro, sidelined with a mild right hamstring strain since March 2, was able to do some light baseball activity on Tuesday. He is expected to get into games early next week.