Giants put Joc Pederson on concussion IL, call up Jason Vosler

"Whenever there's concussion stuff or even the potential of a concussion, we have to be cognizant of the long-term effects of that," manager Gabe Kapler said. "He had come out of what I think was a little bit of a fog yesterday and he wasn't feeling that any more, but he's still experiencing the headache. I think that was enough for all of us."

Pederson crashed into the wall in left center in the seventh inning Thursday while chasing a homer by Patrick Wisdom. "Right when I ran into the wall, my head into started hurting and I got a headache, so I kind of knew something was up," Pederson said. "It wasn't great."

He came within an inch or two of making the catch, with the ball grazing the top of the wall.

"I thought I was pretty close to it," Pederson said. "I thought I should have caught it."

With Pederson out for a week, the Giants called up utility player Jason Vosler, who was a regular filling in last season. Vosler was hitting .279 with five homers in July with Triple-A Sacramento, which was playing at Round Rock (Texas); he found out he was getting called up at 1a.m., took a morning flight and got in to San Francisco at noon.

Vosler, who has played first, second, third and left for the River Cats this season, was at third base Friday against the Cubs.

Will Clark thoughts: Brandon Crawford, who grew up a Giants fan and numbers Will Clark's sweet lefty swing among the many swing imitations he did as a kid, is delighted about Clark's jersey retirement Saturday.

"He was definitely one of my favorites," Crawford said. "Growing up watching him and Will being such a big part of the organization for so many years, it's been a lot of fun getting to know him. And being able to work with him on certain things, talk to him about the game has been great."

Hall of Famer Orlando Cepeda and other Giants greats such as Barry Bonds and Buster Posey are scheduled to be on hand at Oracle Park for the ceremony, which begins at 5 p.m. The team is expecting a sellout.

The opposing side: Chicago manager David Ross took some flak after being caught on camera flipping "double birds" at the San Francisco dugout during a break in play Thursday, and Ross, one of the most genial people in the game, said Friday it was a joking hello a friend with the Giants. (And he has several)

"I should definitely know better," Ross said to start his pre-game media session. "I don't want any kids out there giving the bird to anybody and it's not the way I want to represent this organization or myself or my family."

Ross had high praise for Nico Hoerner, who played at Head Royce High School in Oakland and Stanford, comparing the Cubs shortstop to Ortiz's former Boston teammate David Ortiz, the new Hall of Famer. The reason, Ross said Friday, is that both are "winning players, talk baseball, speak up in meetings, their actions and their work mimic what they talk about, their support for their teammates on the bench even after a big out — just the little stuff that I get to see on a daily basis, and the consistency in which it appears whether we're winning or losing or he's hurt or not. He just shows up every single day."

Asked about his take in the Giants — it's the first time the Cubs have played San Francisco this year — Ross said, "My first impression is they really miss Buster Posey, that's stood out to me. I think some injuries have bitten them at times, and some championship players here who had great years last year, when everybody was counting them out, kind of not doing that this year. That's just part of the game, but it's a really talented group and the pitching staff, especially the starters, are really talented. You know, everyone's got holes here and there."

Susan Slusser covers the Giants for The San Francisco Chronicle. Email: sslusser@sfchronicle.com Twitter: @susanslusser

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