PHOENIX -- Sal Stewart was one fired-up Reds prospect.

On Sunday in the first inning during the organization's 9-7 Spring Breakout win over Brewers prospects, Stewart lifted a 2-2 pitch that sailed over the center fielder's head to the wall. Already not known as a speedster, he stumbled running between second and third base, but still beat the relay throw with a headfirst slide for a two-run triple.

Stewart, who is ranked No. 3 in the organization and No. 83 overall by MLB Pipeline, pounded his chest toward the visitor's dugout and yelled, "Let's go!"

"It means a lot to us and our organization," said Stewart, a third baseman who was the 32nd overall pick by the Reds in the 2022 Draft. "Every time I step between the lines, I’m trying to win. I’m also trying to show them that I’m ready for whatever circumstance comes.”

Stewart, who also hit a single in the fifth inning, was 2-for-5 with three RBIs. This was the second time that he’s been part of the Spring Breakout experience.

“It’s great to get out on the field with a bunch of good players," he said. "It’s awesome because the competition is great. What’s not to love?”

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In 80 games for High-A Dayton last season, Stewart batted .279/.391/.454 with eight home runs and 46 RBIs. His season was cut short in July because of a right wrist laceration.

Stewart, 21, participated in his first big league camp this year and impressed manager Terry Francona.

“He’s a very advanced hitter," Francona said last Monday, after Stewart was sent to Minor League camp. "I don’t know when it is but he’s going to be a good Major League hitter. I firmly believe that."

O'Donnell matches Stewart

During a five-run top of the third inning, center fielder Ethan O'Donnell pulled a 1-1 pitch toward the right-field corner and reached third base standing up with a two-run triple of his own.

“I was talking to Cam Collier between at-bats and made some adjustments and I stuck to the plan there," said O'Donnell, who is ranked No. 18 in the organization. "He reminded me to stay through the ball and I work best looking to the other way. I give credit to Cam on that one.”

Collier, who is the No. 90 overall prospect and No. 4 in the organization, was unable to play as he recovers from left thumb surgery.

The lefty-hitting O'Donnell, 22, spent all of 2024 at Dayton and batted .269 with a .774 OPS, 10 homers and 40 RBIs in 104 games while working through a shoulder issue.

“That community in Dayton is unbelievable," said O'Donnell, a sixth-round pick out of Virginia in the 2023 Draft. "The support they have, the staff they have, let alone our organizational staff and our players in the locker room. Every day going to work was the best and to get that experience in a tough league against some good competition was phenomenal. Dealing with the ups and downs of baseball, the injuries, starting off slow, learning the mental grind of professional baseball. As much as you think you’re ready from college baseball, it’s a different beast.”

Serwinowski working on third pitch

Left-handed starting pitcher Adam Serwinowski, the Reds' No. 12 prospect, threw two innings and allowed one run, one hit and two walks with one strikeout. That strikeout came with a runner on first base when he got José Anderson looking at a strike-three fastball.

“You have to control the run game. I held the pause long and get a guy after he calls a timeout, make him wait and then he gets uncomfortable in the box and then I freeze him with a fastball," said Serwinowski, a 15th-round pick in 2022.

In his first full pro season during 2024 with Single-A Daytona, Serwinowski led the Florida State League with 25 starts and was eighth with 106 strikeouts. He posted a 3.57 ERA and 1.27 WHIP over 85 2/3 innings. Most of his starts were capped at four innings.

Serwinowski is in the process of developing his changeup.

“I’ve been working on that for about two weeks so far," he said. "It’s coming along quicker than you’d think. They’re letting me feel it out when I want to introduce it in games when I feel comfortable to throw. We found a grip that we think is good and [the pitch] will contribute to my pitching depth.”

Mey hits 102

The Reds dugout thoroughly enjoyed watching No. 20 prospect Luis Mey zip through a scoreless eighth inning in relief. Mey, who struck out two, reached 101 mph multiple times and topped at 102 mph with his final pitch for the strikeout.

"That was fun to watch," Triple-A Louisville manager Pat Kelly said. "For me, the impressive thing is he threw strikes. A lot of guys throw hard but are constantly behind. He was aggressive. He went after the guys"