Coming into his senior year, Jack Mazurowski had been a part of eight total wins with the Portland Christian High School baseball team.

As the Royals took their lumps, Mazurowski was there looking to improve on the mound and at the plate after taking the game more seriously in high school and starting to play club ball in the summer.

Now in 2025 as one of two seniors on the team, the Royals notched wins No. 9 and 10 on Friday, May 9, at Nestucca to improve to 10-7.

It’s a far cry from the 1-17 freshman campaign and 0-18 sophomore campaign. And it’s put the Royals at No. 16 in the OSAA ranking, as of May 10, for a possible playoff spot in the 22-team field.

This was always the plan coming into the season for Portland Christian in order to have their four-year varsity man in Mazurowski go out with a bang.

“Going into the season, our preseason talks and everything was, ‘How can we send Jack off on a high note?’” Royals head coach Kyle Wilson said. “He’s come through some pretty rough years here at Portland Christian where we didn’t have a lot of success, but it never caged him as an athlete.”

Wilson described how Mazurowski first started playing baseball like any other kid looking to have fun. But as his development grew and the long frame began to sprout up, there was real potential for him on the mound and across the diamond overall.

Following Mazurowski’s sophomore high school season, he started playing club ball with the Portland Rosebuds of the Wild Wild West League, something he did following his junior year and plans to do again this year.

Going against college competition at times with the Rosebuds and getting more reps in the sport has allowed the senior to become one of the best players in the city, regardless of classification.

This year, Mazurowski has an ERA of 0.95 in 44 IP along with a 0.91 WHIP, sitting No. 2 and 1 in the categories across the city of Portland. The senior has a four and two-seam fastball along with a slider and an improving changeup, all of which has movement according to Wilson.

Mazurowski is a pitcher who rakes too, sitting first in the city in batting average with a remarkable .525 average (32-for-61) and is first in on-base percentage as well at .574. He plays shortstop when he isn’t pitching.

“Playing against older and good competition (in the summer) has helped (Mazurowski) figure out what he’s doing on the mound, come up with a plan,” Wilson said. “This is kind of the first year where he’s executing those calls and when he does that, he’s almost unhittable.”

Wilson credits those early years in developing Mazurowski as a leader considering the amount of errors and mistakes the senior had to endure yet continued to encourage his team.

The leadership was also gained from Mazurowski being an all-around star athlete for the Royals.

He’s been the goalkeeper on the soccer team and a vital forward for the boys basketball team that has gone 55-4 the past two years with two second place finishes at state.

Not only that, but Mazurowski doubles up in the spring as a track and field athlete, mainly prioritizing the 110 and 300 meter hurdles. His season best time of 16.36 seconds in the 110 is fourth in 2A and his 43.23 is seventh in 2A in the 300 hurdles.

“I call him the Energizer Bunny because he never runs out of it,” Wilson said. “We’ll get done with a full practice and he’s like, ‘Hey, can we go play wiffle ball?’ Or, ‘Hey, can we go do this?’ Always just wants to have fun, always wants to be moving around.”

Mazurowski will be doing some moving next year as he’s committed to pitch for Division III Wheaton College near Chicago next year.

Before then, his teammates hope to get Mazurowski into the playoffs, and plenty have been stepping up to the plate in 2025.

Fellow senior Joseph Diesel, who is recently committed to play basketball at Ozark Christian College in Joplin, Missouri, has been the secondary punch for the Royals. Diesel has thrown 22.1 innings with a 4.70 ERA while hitting .390 and reaching base at a .510 clip.

“Joseph being able to come in and be that second voice alongside Jack so Jack doesn’t haven’t to do it all,” Wilson said. “Having a powerful bat in the lineup in the too, (Diesel) could hit one out if he wants to.”

The team is mostly made up of sophomores and freshmen though, and sophomore Donovan Endres hopes to carry the legacy Mazurowski is leaving behind.

Endres is batting .381 and couples that with a ridiculous .574 OBP thanks to 18 walks on the year. He also leads the team in stolen bases with 12 as he continues to play beyond his years.

“Still a long ways to go for (Endres), but he’s that spark plug, brings a lot of energy and he’s got the speed so he’s hustling around, our doubles guy,” Wilson said. “Just a maturity level to put the ball in play, not get too big and that’s really cool to see being a young kid.”

Portland Christian closes the season with a three-game set against Vernonia for 3 p.m. Tuesday, May 13 at home and then a double header at 3 and 5 p.m. Friday, May 16 at Vernonia.

The Royals haven’t been to the postseason since 2014, and look to be in good shape if they can get the sweep on the last-place Loggers.

But Mazurowski doesn’t need a postseason appearance to cement his legacy in the Royals baseball program.

“He’s come a long way and it’s a lot of hard work on his part and a lot of love for the game and keeping it fun,” Wilson said. “He’s been a blessing.”