28 December 2025
Australian Youth Championships
Preview and Roster | South Australia at the U16 and U18 Baseball Championships
South Australia has turned into a bit of a baseball hot-bed as of late.
They were one of two states in 2025 to medal in both divisions – Gold at U16 and Bronze at U18.
They are the back-to-back U16 Girls champions.
They also hold the last two Australians to reach the major leagues. Their ABL side has won two of the last three Claxton Shields.
ALL TEAM ROSTERS AT TOURNAMENT HUB: 2026 AYC Information
It’s a small community, but one that prides itself on outperforming their participation numbers.
How will South Australia’s gold medal group perform up an age group? Will an entirely new U16 squad be able to handle national championship pressure?
Your South Australian roster and preview is below.
U18 SOUTH AUSTRALIA: CONNECTED, CONFIDENT, AND CHASING A MEDAL
2025 Result: Bronze

2025 Result: Bronze
South Australia enters the Australian Youth Championships with a U18 group that knows what this stage demands — and believes it belongs here.
Led by team manager Chris Sims, this is a program with experience and continuity. Sims is overseeing his fifth AYC campaign, and the familiarity shows in how this group has prepared and how it carries itself.
Preparation for this tournament has been ongoing for months. The off-season never really stopped, with players juggling heavy state league schedules, high-performance sessions, and recovery blocks. As December progressed, the focus narrowed.
“Back end of December we start to work on the team defence side of things and lock in on specific AYC prep more,” Sims said.
They’ll also be travelling to Victoria to play a friendship series between Christmas and New Years for extra preparation.
The expectations are clear.
“We expect to make it out of the pool rounds and compete for a medal,” said Sims.
What sets this group apart is not just talent, but connection.
Many of these players have grown through the system together — a product of South Australia’s smaller baseball community — and that familiarity has turned into confidence.
“Our biggest strength is the connection this group has,” Sims said. “They’ve all played together for a long time… they’ve now also won together and have confidence they can perform at this event.”
Return player Owen Couzner agrees.
“It’s honestly a brotherhood — we all get along really well,” he said.
A large portion of this year’s group went undefeated in the U16 Division in 2025 en route to a Gold Medal. Now, they bump up a level.
Toby Kortekaas, a return U18 player, says he is looking forward to having an influx of champions on the team.
“A lot of the players on our team know what it’s like to play in the gold medal game and that will be a huge strength to our confidence,” he exclaimed.
That connection feeds directly into the team culture.
Training sessions are driven as much by the players as the staff.
“We have a strong player-led culture,” Sims said. “Guys aren’t afraid to speak up around standards and expectations we have set ourselves.”
On the field, the biggest jump has come offensively.
Over the past month, the lineup has taken a noticeable step forward, both in production and intent.
“Our offence has taken a big step forward over the past four to six weeks,” Sims said. “Guys are producing good numbers locally and are locked into getting their work in during practice and at West Beach on non-practice days.”
That offensive growth has been supported by clear focus areas at training. Hitters have been drilled on plate approach, while the pitching staff has worked heavily on command and efficiency.
“We’ve focused on plate approach for our hitters along with two-pitch command and efficiency for our pitching staff,” Sims said. “We’ve also worked on improving the overall fitness base across the group.”
Roster construction reflected both strategy and conditions. With U18s returning to metal bats, Sims and his staff anticipated increased offence across the tournament.
“You would expect to see a spike in offence this January,” Sims said. “Having more pitching depth was a factor in our selections.”
South Australia has expanded to 20 players, up from 18 last year, with additional arms added to manage workloads across a demanding schedule.
Several players are primed to make a statement on the national stage. On the mound, Sims points to Deakin Filko as a tone-setter. Filko pitched for Australia at the recent U18 World Cup.
“If Deak can keep his pitch count efficiency in check, he will have a very good tournament,” Sims said. “He’s touched 90 in our winter programs and has plus off-speed to complement.”
Offensively, Taj Williams is a name to watch.
“He’s put a body of work in over the off-season and has been holding down shortstop for one of the better State League teams in Adelaide at just 16 years of age. Expect him to play a key role on the left side of the diamond and in the heart of the lineup,” he says.
Another name to watch: Ollie Hayes. The newly turned 16-year-old won the MVP of the U16 bracket last year. How he translates to an age group above will play a big role in South Australia’s success.
At its core, this group reflects what South Australia continues to produce: connected players, strong work ethic, and shared belief.
“Small state,” Sims said. “Our kids all work hard together and have wonderful connection.”
With experience in the dugout, confidence in the group, and a clear goal in sight, South Australia enters the U18 Australian Youth Championships ready to compete — and ready to chase hardware.
THREE THINGS TO WATCH
1. Pitching depth in a metal-bat environment
With offence expected to rise across the tournament, South Australia’s decision to carry extra arms could be decisive. Managing workloads and winning bullpen innings will be key.
2. Offensive growth against elite competition
The SA lineup has taken a clear step forward locally. How that improved plate approach translates against the country’s best arms will shape their medal push.
3. Gold Medal Mettle
This is a confident, player-led group that isn’t afraid to hold standards. Many of these players were 2025 U16 Champions for a reason. Watch how they respond in tight games — their connection and shared history may be their biggest edge.
U16 SOUTH AUSTRALIA: A NEW GROUP, SAME STANDARD
2025 Result: Gold Medal

Defending champion South Australia arrives at the Australian Youth Championships with a fresh-look U16 squad and a familiar expectation: compete hard, play the game the right way, and stay in the fight.
Coached by Marc Taintey, this year’s team is made up entirely of first-time AYC players.
That’s a big shift from last year’s gold-medal group, but Taintey believes the opportunity — not the pressure — is the driving force.
“All players this year are newcomers to AYC,” Taintey said. “The expectation is to compete, execute our strategy, and immerse ourselves in the experience that is an AYC. The results will be what they will be.”
That reality hasn’t been lost on the group, with many experiencing their first opportunity to represent South Australia at a national level.
“I have never left South Australia to play baseball… this is my first state team,” pitcher Ari Mundy said. “But I can’t wait to follow in the footsteps of others.”
That sense of opportunity is a consistent thread throughout the squad.
“I’m really keen to putting my talents on the stage at the AYCs this year,” shortstop Sebastian Bravo added.
Preparation has been thorough and deliberate.
South Australia’s pathway began back in July with a 40-player squad, narrowed to 20 by early November. Training has been consistent throughout, with two sessions a week and competitive games mixed in to keep players sharp.
One thing fans will notice early is how this team plays the game. Taintey has built the group around pitching, defence, and flexibility — a formula designed to keep SA competitive against anyone.
“Pitching and defence keeps you in ball games — especially at this age group,” he said. “We’ve focused on throwing strikes, limiting free runners, and making the routine plays.”
That focus is backed by depth. SA carries 16 pitchers, many of whom can also play other positions, giving the coaching staff options across a long tournament.
Offensively, there is speed and power at the top of the lineup, with players capable of creating pressure in different ways.
Culture has been another pillar of the build.
“It’s competitive and fun, with a real care factor for the team,” Taintey said. “There’s also some old-school discipline, so the group understands the privilege they’ve earned representing South Australia.”
It’s a sentiment players in the squad back up.
“A lot of us have played with and against each other for years, so we have pretty good chemistry,” outfielder Liam Trembath added.
Others echoed the same sentiment.
“Our skills and teamwork — we have each other’s backs and work hard,” Matthew Dunn said.
“We are a tight team unit,” Oliver Breach added.
Several players have positioned themselves as names to remember.
Hugo Costa brings size, speed, and raw athleticism as a two-way player.
James Dallmann offers versatility and competitiveness, able to impact games on the mound or in the field.
Will Stock provides offensive punch and edge, while Alice Brown gives SA reliability and calm on the mound as a consistent strike-thrower.
South Australia’s recent success at both AYC level and in the ABL continues to shape expectations within the program.
For Taintey, that history is about opportunity as much as outcome.
“It creates an understanding of what’s possible for athletes who are committed to their development,” he said.
A playoff berth is the goal, but the identity is clear: compete, execute, and earn every inning.
“I’d hope we can be part of the top four,” Taintey said.
THREE THINGS TO WATCH
1. Pitching depth over the tournament
With 16 pitchers and multiple two-way players, South Australia has the ability to spread innings and stay fresh late in the week — a major advantage at national championships.
2. Defensive execution
This team has been drilled on fundamentals. If SA is clean in the field and limits mistakes, they’ll stay in games against any opponent.
3. Emerging stars on the big stage
For many players, this will be their first taste of a national spotlight. Keep an eye on Costa, Dallmann, Stock and Brown as potential breakout performers.











