MESA, Ariz. — Eighteen-year-old pitcher Julio Urias has been a hot topic in Dodgers camp. He threw two scoreless innings in his spring debut against the Milwaukee Brewers last Friday, impressing teammates with his maturity on and off the field.

Wednesday, Urias was dealt adversity in the form of three straight singles by the heart of the Chicago Cubs’ major league lineup: Anthony Rizzo, Starlin Castro and Miguel Montero. Urias was allowed to face Chris Coghlan with the bases loaded and none out, and induced a sacrifice fly that drove in a run.

His final line: one-third of an inning, three hits, one earned run.

“It looks like a bad outing on paper, but I look at it as a good outing because it’s something I can work on,” Urias said through an interpreter. “My confidence is absolutely there. I want to work on the slider, the changeup as well, locating pitches in the zone.”

Dodgers manager Don Mattingly said he removed Urias because he’d thrown 24 pitches in one inning. Urias threw another 15 pitches in the bullpen afterward.

“He still is an 18-year-old in big league camp with a pretty good reputation,” Mattingly said. “He’s going to get guys ready to go. They’re going to want to get a piece of him.”

Urias considered it a lesson learned.

“I can’t rely on the fastball here,” Urias said. “You have to have your secondary pitches.”

Today’s box score is here.