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8/17/2013 7:09 P.M. ET

Marlins prospect Del Orbe stable after skull surgery

MIAMI -- Marlins pitching prospect Ramon Del Orbe underwent successful surgery on Thursday afternoon to eliminate bleeding on the brain.

Del Orbe, a 21-year-old at Class A Greensboro, remains in stable condition after being struck on the head by a line drive on Tuesday at West Virginia.

The initial hope was the right-hander would avoid surgery. But he sustained two fractures to his skull and sustained swelling and bleeding on the brain. He also has a concussion.

According to the Marlins, Del Orbe's neurological functions are all in place, and he is doing well under trying circumstances.

The pitcher will remain in the intensive care unit through the weekend, and best-case scenario, he may be discharged from the hospital by Wednesday or Thursday.

To stop the bleeding, surgery required a portion of Del Orbe's skull being removed. At some point, a second surgery will be performed to re-insert the piece of skull, which is being preserved at the hospital.

The injury occurred in the sixth inning on Tuesday, when Del Orbe was hit by a liner off the bat of West Virginia's Josh Bell in Charleston, W.Va.

A 5-foot-11, 190-pounder, Del Orbe signed with the Marlins as a non-drafted free agent in 2008. He is 5-8 with a 4.75 ERA in 23 starts.

Polanco feeling better after being hit in head

MIAMI -- Aside from being a bit dazed, Placido Polanco appears to have dodged a potentially major injury.

Polanco was involved in a scary moment in the eighth inning on Friday night when he was struck on the left side of the helmet by Santiago Casilla's 94 mph fastball.

The incident created a somber situation in the Giants' 14-10 win at Marlins Park.

On Saturday, Polanco said he felt better. He doesn't have any concussion symptoms. But as a precaution he was not available for the game against San Francisco, and he will be re-evaluated on Sunday.

"The good sign is, I didn't have any headache," said Polanco, who noted he didn't sleep well. "It's just a little balance. I got hit in the ear. That's how I feel. They told me to lay low today, and see how I feel [Sunday]."

After the game, Giants manager Bruce Bochy called Miami manager Mike Redmond to express his concern.

"I thought that was a class move," Redmond said. "He wanted to make sure he was all right. Obviously, any situation like that is scary for all of us who have been in this game. I hope he is going to be all right."

Marlins trainer Sean Cunningham checked on Polanco. To see if the veteran third baseman had his senses, Cunningham asked what day it was. A simple enough question, but a confusing one to anyone who wears a uniform, because games are played every day, so it took him a few seconds to figure it out.

"The trainer asked me a real tough question," Polanco joked. "It's an answer I don't even know when I am OK. That's the worst question you can ask a baseball player. I was like, 'seriously?' That's why I was laughing a little bit. I was thinking, 'We were off yesterday, so this is Friday.'"

It's not the first time Polanco has been involved in scary moment.

While with the Tigers in 2006, he was hit in the face by an Esteban Loaiza fastball.

"Really scary any time a guy gets hit in the head," Redmond said. "It looks like he's going to be OK. Today will be a day he takes it easy. He's not available for the game. Hopefully, he dodged one there."

Marisnick starts, hot-hitting Ruggiano sits

MIAMI -- Belting two homers along with a two-run double on Friday night didn't change Justin Ruggiano's status on Saturday.

Once again, the outfielder was not in the Marlins' starting lineup for the second game of the weekend series with the Giants at Marlins Park.

Ruggiano had a big night in Miami's 14-10 series-opening loss. Entering as part of a double-switch, he drove in four runs on three hits, with the two home runs.

For now, Ruggiano's role is as a reserve, as the Marlins are giving rookie Jake Marisnick regular playing time in center field.

Manager Mike Redmond remains committed to the plan of going with young players in what has been a developmental year for the organization.

Ruggiano received the bulk of the playing time in the first half, and he has 302 at-bats in 93 games. He also labored through a Marlins record 0-for-42 slump, which was snapped after he collected three hits at Kansas City on Wednesday.

In his last two games, Ruggiano is 6-for-8. He understands his situation.

"The patience [Redmond] had with me when I was going through a rut, I have so much respect for what he did when I was doing nothing," Ruggiano said. "The decisions he makes the rest of this year, I'm always going to have his back. I'm here to do whatever job he wants me to do."

Ruggiano on Wednesday was given the start in right field at Kansas City when Giancarlo Stanton took a breather.

Redmond said he gave consideration to starting Ruggiano on Saturday, but opted to stick with Marisnick, who is batting .200 in 22 games.

"It's funny," Redmond said. "When [Ruggiano] was 0-for-38, you guys thought I was crazy playing him over Stanton. Now that he is 6-for-8, you are wondering why I'm not playing him? It's funny."

Redmond noted that Ruggiano still may play, coming off the bench, if necessary.

"He's swinging the bat well," Redmond said. "Hopefully he will get a big hit for us coming off the bench.

"Jake is a young guy, and we want him to go out there and get some playing time. That's important to him. Rugg got in there and he took advantage of his opportunity. Who is to say he might not be in there [Sunday]?"

Eovaldi potentially tipped pitches in tough start

MIAMI -- Next time Nathan Eovaldi takes the mound, expect to see the Marlins right-hander more careful with his delivery.

After being rocked for 11 runs (nine earned) on 12 hits in three-plus innings on Friday night in a loss to the Giants, the Marlins wondered if Eovaldi was tipping his pitches.

Manager Mike Redmond, pitching coach Chuck Hernandez, bullpen coach Reid Cornelius and Eovaldi closely studied what might have gone wrong on Friday.

What they saw is perhaps Eovaldi was doing something subtle that the Giants detected.

"I think if you look at the video, maybe there could be something," Redmond said. "They hit him hard. That's the bottom line. Hopefully he will learn from that. I think it's always good to stay on top of guys' mechanics, especially our young pitchers, so they are relentless in their consistencies with their deliveries and their glove placement, and how they take signs and all that stuff. It's definitely something guys need to be aware of."

Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter @JoeFrisaro. This story was not subject to the approval of Major League Baseball or its clubs.