CHICAGO — Cubs right fielder Kyle Tucker is likely to get multiple days off after going 0-for-4 in Game 1 of a doubleheader Monday, manager Craig Counsell announced after his team’s 7-0 loss to the Milwaukee Brewers.

Tucker, 28, has struggled mightily this month, hitting .160 with zero extra-base hits. He was booed after each of his final three at-bats in Game 1, including two weak groundouts and a popup to left field. He also grounded out in his first at-bat.

“The fans are frustrated, and Kyle is frustrated,” Counsell said after the game. “When you make outs, it doesn’t look good. He’s trying. It’s just not clicking. We’re going to have to take a step back here, just give him some days off to reset him, hopefully.”

Players aren’t available to speak between doubleheaders, so Tucker couldn’t comment on the decision. He hasn’t homered since July 19 and has just four extra-base hits since July 1.

“He’s frustrated, and we’re not coming up with solutions for him and he’s not coming up with solutions,” Counsell said. “Sometimes, you have to take some steps back to go forward again.”

Overall, Tucker is hitting .261 with an .821 OPS, but his ground ball rate has skyrocketed in August. It’s 53.7%, 17th highest among qualified hitters, according to ESPN Research. Entering the month, he ranked ninth lowest in ground ball rate.

“It’s not for lack of effort on the coaching side or Kyle’s side,” Cubs president of baseball operations Jed Hoyer said before the game. “He hasn’t slugged in quite a while. The ball is not in the air. The exit velos aren’t high. A lot of it is mechanical. If you look at his swing early in the year, as opposed to now, it’s less connected, therefore less powerful.”

Tucker jammed his right ring finger in early June, an injury that could have impacted the grip on his swing and subsequently his mechanics, but he insists that’s not an issue. The eight-year veteran will be a free agent after this season.

“He’s too good a player for it not to click,” Hoyer said. “He’s going to get hot again. Hopefully, it’s a torrid-hot streak like it was in April.”

That streak won’t begin at least for a few games as Tucker will continue to work behind the scenes to find solutions while getting a mental reset. Meanwhile, Cubs starter Cade Horton left Game 1 in the third inning because of a blister issue, but he said he thinks he’ll make his next start.

“It’s nothing crazy,” Horton said.

PHILADELPHIA — Phillies ace Zack Wheeler had surgery Monday to remove a blood clot in his upper right arm, and the team says a timeline for his recovery remains unknown.

Manager Rob Thomson acknowledged the uncertainty, saying, “We don’t know,” when asked whether Wheeler would pitch again this season, or if the situation was career-threatening.

The Phillies said Wheeler underwent a thrombolysis procedure by Dr. Paul DiMuzio at Thomas Jefferson University Hospital.

Wheeler, 35, a three-time All-Star who leads the majors with 195 strikeouts, was placed on the injured list Saturday after experiencing worsening shoulder “heaviness” following his start in Washington the previous night.

His condition fell under the realm of thoracic outlet syndrome, a known risk for overhead-throwing athletes, where compressed blood vessels or nerves near the neck can lead to clot formation.

Treatment options vary depending on the root cause. In addition to clot-dissolving procedures, athletes often undergo extended blood thinner therapy — spanning months — or even rib resection surgery to prevent recurrence, with high return-to-play rates in cases where such interventions are successful.

Meanwhile, the Phillies are left without the anchor of their rotation with six weeks to go in the regular season. The National League East leaders are leaning on a group of pitchers, including Cristopher Sánchez, Ranger Suárez, Taijuan Walker and Jesús Luzardo, to fill the void. Aaron Nola, who missed three months because of ankle and rib injuries, returned to the rotation on Sunday.

“You could always rely on [Wheeler] every fifth day, but at the same time, I have confidence in our entire rotation,” Thomson said. “As tough as it is to lose Zack, I feel really good about our staff. I really do.”

In 24 starts this season, Wheeler is 10-5 with a 2.71 ERA. He has thrown at least 192 innings in three of the previous four seasons.

Beyond the immediate baseball implications, teammates have rallied around Wheeler.

“He’s the heart of this team, the heart of the staff … you never want to see it,” reliever Matt Strahm said, emphasizing that Wheeler’s health is everyone’s priority.

Seattle Mariners outfielder Victor Robles was ejected from a minor league game during a rehab assignment with Triple-A Tacoma on Sunday after he was nearly hit by an inside pitch and tossed his bat at the pitcher.

Las Vegas starter Joey Estes’ first pitch to Robles in the third inning was inside and Robles whacked at it to avoid getting hit.

After taking a few steps behind the plate and dropping his bat, Robles picked up the bat and threw it in Estes’ direction and was immediately ejected from the game by plate umpire Joe McCarthy.

Robles, who was hit by a pitch three times in his previous four games with Tacoma, took some steps toward the mound while yelling at the pitcher but was held back by McCarthy and Las Vegas teammates.

After going into the dugout, Robles threw a box of snacks toward the field before heading to the clubhouse.

He took to social media later to apologize for letting his frustration get the best of him.

“Coming off a long rehab and being away from the game for most of the season has been physically and mentally challenging,” Robles said in his Instagram story. “Adding to that, the recent passing of my mother has been incredibly hard, and I’ve been doing my best to hold it together. That’s not an excuse, but some context I feel you deserve to understand where I’m coming from.”

He added, “Getting hit 5 times in 15 at-bats added to that pressure, and I reacted in a way I’m not proud of. This game means the world to me, and so do the people who play it. I respect every one of you, not just as a player, but as a teammate and competitor.”

Robles is rehabbing a dislocated left shoulder he suffered in April.

Information from The Associated Press contributed to this story.