CHICAGO — As part of the monitoring of his concussion symptoms over the past week, Luis Arraez had to take test after test on the computer. And on Sunday, he said he was sick of it. Forty-five minutes of continuous tests had put him nearly to sleep.

But the 24-year-old has now passed all the tests he needed to to clear the concussion protocol, and he was activated before Tuesday night’s game against the White Sox in Chicago. To make room on the roster, the Twins optioned infielder Nick Gordon to Triple-A St. Paul.

Arraez suffered a concussion last Monday against the Rangers, colliding with catcher Jose Trevino at the plate. Though he scored a run, he paid the price for it, suffering spells of dizziness, along with headaches and neck pain afterward.

On Sunday, he said he was feeling “like new” and was eager to get back out there.

“Luis is full go. I have no reasons to keep him off the field on the medical side,” manager Rocco Baldelli said. “We’ll see how he responds today to game action and being out there on his feet all day long. I’m assuming he’ll take to it well. I don’t think he would have the clearance to go out there and play if there was any concern at all.”

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Arraez’s return is a big boost for a lineup that is missing center fielder Byron Buxton and outfielder/first baseman Alex Kirilloff. All three were placed on the injured list last week.

Injury updates

Speaking of Kirilloff and Buxton, Baldelli had no big updates on the pair on Monday afternoon. Buxton, Baldelli said, has been mainly resting and getting treatment.

The outfielder suffered a Grade 2 hip sprain on Thursday against the Rangers and the Twins expect to be without him for weeks.

Kirilloff, meanwhile, received a cortisone shot, to help his sprained right wrist on Friday and has been getting treated in the training room. Swinging the bat will be the real test for him, and that’s expected to come soon.

“Obviously swinging the bat was probably the most major concern but sliding, doing different things, really any baseball activity, it’s something that he would feel,” Baldelli said. “…It’s really a feeling where he could tell there was some discomfort and inflammation and swelling or whatever you would say that just kind of felt like he was restricted in some way, so we’re trying to work that out before we actually move forward to progressing with baseball activities.”

Briefly

Trevor Larnach and White Sox second baseman Nick Madrigal caught up on the field before Tuesday night’s game. The two were teammates at Oregon State, winning the College World Series together in 2018 shortly after they were both drafted in the first round. … J.A. Happ (2-0, 1.91 earned-run average) will start on Tuesday, opposed by lefty Dallas Keuchel. … Tuesday was the start of 17 games in 16 days for the Twins.