PHOENIX -- Buster Posey is back.

The Giants activated the veteran catcher from the seven-day concussion injured list for Friday’s 7-0 loss against the D-backs at Chase Field. Posey started behind the plate and batted third, going 2-for-4 with a double.

Posey took a foul tip off the mask during a game against the Reds on May 5. He played the next two days before going on the concussion list on May 8. The 32-year-old missed only six games due to a rainout in Colorado and two scheduled off-days.

On Thursday, Posey was evaluated by the Giants’ training staff, and he was cleared to return.

“He’s doing well,” manager Bruce Bochy said. “It’s good to have him back. I know he’s excited to be back.”

This was Posey’s second career stint on the concussion list. He also went on it in April 2017. Because of that, he wasn’t going to return until he was ready.

"I think in the position I'm in, you're going to take nicks from time to time, and for me, it was something that I felt like I should've felt more normal than I did after three days," Posey said, when he went on the IL. "From everything I've always heard from doctors about this, it's the second one after your ding that is the one that can really cause problems, so you want to get back to normal before you take another shot."

Posey’s bat had been heating up following a slow start to the season. After batting .196 through his first 17 games, Posey was hitting .300/.333/.540 in his last 15 games before going on the concussion list.

To make room for Posey on the roster, the Giants optioned catcher Aramís García to Triple-A Sacramento on Thursday.

Longoria sick, out of lineup
Third baseman Evan Longoria was out of the lineup for Friday’s game due to an illness, Bochy said.

“I don’t know what it is, but he was pretty sick today, so he’s getting the day,” Bochy said.

With Longoria out, hot-hitting Pablo Sandoval started at third and batted fifth. Sandoval entered the day on a four-game hitting streak, going 6-for-15 with two homers and five RBIs during that span.

Outfield switch
The Giants opted to move Kevin Pillar from center field to right for Friday’s game, swapping him with Steven Duggar. Pillar had only played center in his 39 games in the field this season -- 35 of which came after he was dealt from Toronto to San Francisco on April 2.

It was Pillar’s first game in right field since April 24, 2015, with the Blue Jays. He has played 12 games in right in his seven-year career.

Duggar made only his second start in center since the Giants acquired Pillar. He played all 40 of his big league games in center last season.

Bochy didn’t say whether this would be a permanent swap.

“It doesn’t mean we couldn’t flip them back,” Bochy said. “Give Duggar some time in center field, he is a little younger and a little more room to cover out there and in our ballpark. We happen to have two good center fielders, but I just wanted to switch those two for now.”

Waiver wire
Giants right-hander Andrew Moore was claimed off waivers by the Mariners on Friday. He was designated for assignment last Saturday, only six days after he had been claimed off waivers by the Giants from the Rays.

In Moore’s brief time with San Francisco, he made one start for Double-A Richmond on May 8, allowing five runs in 1 2/3 innings.