MILWAUKEE — Milwaukee Brewers centerfielder Jackson Chourio‘s status for Game 2 of the NLDS against the Chicago Cubs on Monday is uncertain after an MRI on his right hamstring came back inconclusive, according to manager Pat Murphy.

Chourio, 21, left Game 1 on Saturday after legging out an infield hit in the bottom of the second inning. It’s the same hamstring he injured in July — also while playing against the Cubs — putting his immediate playing future in doubt.

“I can’t give you a definitive, but I know that we’re going to test some things today,” Murphy said on Sunday afternoon. “He’s going to be out there today. I don’t know that he’ll do much, but the MRI came back and it’s inconclusive and it’s not a serious hamstring strain, but it’s not necessarily something that won’t limit him.”

Chourio was 3 for 3 in the game before leaving. Murphy indicated rookie Isaac Collins would likely take Chourio’s place in the lineup if the latter player can’t go.

The Brewers manager also announced lefty Aaron Ashby will start Game 2 for his team, though he probably won’t last long after throwing 1⅓ innings on Saturday. He’s likely opening the game to help neutralize Cubs leadoff man Michael Busch — also a lefty — who homered to start Game 1.

“He could go as long as we want him to,” Murphy said of Ashby.

Righty Quinn Priester is likely the bulk innings guy for the Brewers after Ashby, but Murphy stopped short of declaring his plans. The Cubs are countering with lefty Shota Imanaga, who pitched in Game 2 of the wild-card round against the San Diego Padres.

“He’s a competitor,” Cubs manager Craig Counsell said. “And I think he’s a thinking-man’s competitor, and he also pitches with a lot of joy on the mound, while competing at a really high level.”

Imanaga has a 5.73 ERA in four career games against the Brewers, including three starts this season.

“I think all the hitters, they understand what they need to do, and I think that’s the Brewers’ offense,” Imanaga said of his struggles against Milwaukee. “Even yesterday, just the next guy was up, the next guy was ready. So I think, for me, it’s just making sure, take it one out at a time, and then thinking about that one out.”

Murphy was asked about facing the second-year Cub who features a rising fastball and a sinking splitter.

“His heater plays way up,” Murphy said. “If it says 91, the hitter sees it as 95 to 96.”

Milwaukee won Game 1 in a route, 9-3.

CONCORD, N.C. — Tyler Reddick raced Sunday with his championship hopes on the line at the same time his infant son has been diagnosed with a tumor in his chest that is affecting his heart.

Rookie Reddick, the second of Tyler and Alexa Reddick’s two boys, was born in May, and Alexa said last week that he has been dealing with serious health complications. The couple provided an update ahead of Sunday’s race at The Roval at Charlotte Motor Speedway, where Reddick was starting from the pole, needing a victory to remain in contention for the Cup Series title.

Alexa Reddick posted a social media update on Rookie’s condition after Reddick’s pole-winning run, saying he has a “tumor that’s ‘choking’ the renal vein & renal artery. Telling the heart ‘Hey I’m not getting enough blood … pump harder.'”

She said it has caused an enlarged heart, and the four-month-old will need a kidney removed because doctors determined it is no longer functioning.

“He will undergo open surgery to remove his right kidney. We’re just not sure when,” she wrote. “Waiting is ok right now to give his heart a break while he’s on BP medication. They expect his heart to fully recover because it was just an innocent bystander. We have answers but a journey ahead to bring our little Cookie home.”

She added that her son was happy spending time blowing bubbles, playing and “interacting with every nurse & doctor that comes in his room.”

Reddick had kept his son’s health situation private until his wife went public before last week’s race at Kansas Speedway when she announced that Rookie was at Atrium Health Levine Children’s Hospital in Charlotte showing signs of heart failure.

Reddick finally addressed Rookie’s health at Charlotte.

“Healthier is probably not the right word, but I’ve never seen him happier. His color looks good. He’s gained weight. A lot of things are going well,” Reddick said. “All that being said, some of the the tougher moments are definitely ahead. We’re definitely not in the clear. There are some things we need to get through first.

“So, on one hand, I’m really happy and it makes me feel great that he’s doing much better right now, but certainly we have some hurdles we have to get through first before we’re even thinking about leaving the hospital or thinking about what comes next.”

Reddick, who made it to the championship-deciding finale, enters Sunday’s race below the cutline of drivers who will be trimmed from 12 to eight after the race. The bottom four — Reddick, his 23XI Racing teammate Bubba Wallace, Ross Chastain and Austin Cindric — all likely need a victory Sunday to avoid elimination.

“For me, this weekend where we’re at in points, it just is what it is,” Reddick said. “I’m going to go out there and give it my best effort while I’m here certainly. For me, this week, the elimination, everything that is happening in the racing world is taking a back seat as it should.”

Denny Hamlin, co-owner of Reddick’s car, said 23XI Racing has been supportive and involved in getting Rookie the best care.

“We’ve tried to do everything we could as a company to tap into all the resources that we possibly can, to get him second, third opinions, all the things, get him in contact with specialists,” Hamlin said. “We feel not a relief, but it is a little relief that they kind of understand now what the path is forward, versus, kind of not knowing.

“I could not imagine being in their places. He’s got enough to think about. I’m sure he’s probably breathing a little sigh relief that he still goes there to do his job at a high level, given everything that’s going on off the track.”

Reddick will start alongside Shane van Gisbergen, who has won four races this year on road and street courses. The New Zealander is the heavy favorite, and any driver hoping to avoid playoff elimination will have to beat van Gisbergen.

Reddick, meanwhile, was grateful for the support he and his family have received and reflected on the emotional impact this has had on his family.

“Just countless individuals have helped out,” Reddick said. “Countless individuals have reached out, provided support whatever it might be. It’s been really eye-opening. I agree with my wife this is the hardest thing that I’ve had to go through. … Certainly being away (last week) wasn’t ideal.

“That was a decision me and her came to a conclusion on when I was in Kansas. He was going in the right direction. Yes, like I said, big things ahead that we have to fix, but for that past weekend he was stable and going in the right direction. It was difficult to stay and race [at Kansas], but we were on the same page about it. I just wanted to get off that plane so bad on Sunday night and get back to the hospital.”