Redondo Union didn’t care that Mira Costa’s volleyball team was ranked No. 1 in California. This was their South Bay rival coming to their gym Thursday night, and anything can happen when a team digs deep and doesn’t fear losing.

The Sea Hawks (14-2) were aggressive from the outset and came away with a 27-25, 21-25, 25-22, 21-25, 15-13 victory.

“Chemistry,” setter Tommy Spalding said about the Sea Hawks’ triumph. He’s one of three players headed to MIT, and all three had big matches.

At one point on back-to-back plays, Carter Mirabal had a block and Vaughan Flaherty followed with a kill off an assist from Spalding. Chemistry.

JR Boice, a Long Beach State commit, was delivering kills, and Cash Essert’s serving and all-around play kept Mira Costa’s Mateo Fuerbringer looking frustrated. The Sea Hawks’ focus was on Fuerbringer, who came alive in the fifth set with six kills, but Redondo was able to come back from an 11-9 deficit.

It was only Mira Costa’s second loss in 25 matches. Redondo Union took over first place in the Bay League.

Baseball

Orange Lutheran 3, Jacksonville (Fla.) Trinity Christian 2: The Lancers advanced to the semifinals of the National High School Invitational in Cary, N.C., behind a walk-off single in the eighth inning by Andrew Felizzari. Brady Murrietta had tied the score with a squeeze bunt in the bottom of the seventh. CJ Weinstein had two doubles for the Lancers.

Venice (Fla.) 12, Harvard-Westlake 0: The Wolverines were limited to three hits at the National High School Invitational in Cary, N.C.

Casteel (Queen Creek, Ariz.) 3, St. John Bosco 2: The Braves suffered their first defeat in North Carolina. Jack Champlin threw five innings and also had two RBIs.

Chatsworth 6, Taft 3: Tony Del Rio Nava threw six innings and had two RBIs in the West Valley League win.

Granada Hills 4, El Camino Real 3: A two-run single by Nicholas Penaranda in the seventh inning keyed a three-run inning for the Highlanders in their West Valley League upset. JJ Saffie had three hits for ECR.

Cleveland 4, Birmingham 3: The Cavaliers pushed across a run in the top of the 10th inning to break a 3-3 tie in the West Valley League win. Joshua Pearlstein finished with three hits, including a home run.

Sun Valley Poly 4, San Fernando 2: Fabian Bravo gave up four hits in 6 2/3 innings for the Parrots, who are tied with Sylmar for first place in the Valley Mission League. Ray Pelayo struck out eight for San Fernando.

Verdugo Hills 15, Kennedy 1: Cutlor Fannon had two doubles and four RBIs in the five-inning win. Anthony Velasquez added two singles and four RBIs.

Westlake 9, Agoura 4: Jaxson Neckien hit a three-run home run to power the Warriors.

Thousand Oaks 7, Calabasas 5: Gavin Berigan, Jeff Adams and Cru Hopkins each had two hits for the Lancers.

Oaks Christian 11, Newbury Park 2: Dane Disney contributed three hits in the Marmonte League win. Carson Sheffer had two doubles and three RBIs.

Santa Monica 12, Simi Valley 4: Ryan Breslo and Johnny Recendez had two RBIs and a triple for Santa Monica. Ravi Chernack had three RBIs.

Dana Hills 7, Corona Santiago 0: Gavin Giese finished with eight strikeouts over six innings and gave up one hit for Dana Hills.

Softball

Sherman Oaks Notre Dame 10, Sierra Canyon 0: Kelsey Luderer contributed three hits and two RBIs while freshman Ainsley Jenkins threw five scoreless innings.

Chaminade 15, Louisville 2: Norah Pettersen had two hits and four RBIs.

Carson 10, San Pedro 0: Atiana Rodriguez finished with three hits, including a double and triple, and three RBIs.

Huntington Beach 6, El Modena 2: Willow Kellen had three hits for the Oilers.

Murrieta Mesa 15, Chaparral 0: It’s a 16-0 start for the Rams. Tatum Wolff hit two home runs.

The fiancée of Buffalo Sabres star Rasmus Dahlin received a roaring welcome home in her first appearance of the season Wednesday night, months after undergoing a lifesaving transplant after she suffered heart failure during a vacation in France.

Carolina Matovac, 25, was shown on the jumbotron during Wednesday’s game against the Boston Bruins. Fans cheered as she waved, and Dahlin, who was also shown on the screen in a split, cracked a smile at the crowd’s reaction.  

“Welcome home to Carolina Matovac, the fiancée of our captain Rasmus Dahlin,” the arena announcer said. “She is back with us, attending her first game of the season. The Sabrehood loves you, Carolina.” 

In an open letter to fans in September, Dahlin shared that Matovac had been feeling ill for several days during their trip, which led to her experiencing “major heart failure.”

“Fortunately, she received CPR on multiple occasions, and up to a couple of hours at a time to keep her alive, which ultimately saved her life. Without her receiving lifesaving CPR, the result would have been unimaginable. It is hard to even think about the worst-case scenario,” he wrote at the time. 

Matovac remained on life support for weeks before receiving the transplant in France.

JACOB WINTERTON, FORMER OHL PLAYER AND BROTHER OF NHL’S RYAN WINTERTON, DEAD AT 25 AFTER CANCER BATTLE

In January, Matovac revealed she was pregnant when her heart failed, adding that her unborn child was the reason she went to the hospital initially. 

“You will always hold a special place in our hearts as our first baby, even though we never had the chance to meet. Our love for you is endless,” she wrote in a post on Instagram on what was supposed to be her due date.

“Though you didn’t get to experience this world, you played a vital role in ensuring that I could continue to be a part of it.” 

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Despite taking some time to be with Matovac as she recovered in their native Sweden, Dahlin is second on the team with 65 points, and the Sabres are on the cusp of ending an NHL-record 14-season playoff drought.

The Associated Press contributed to this report. 

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Transgender women athletes will be excluded from the Olympics beginning with the 2028 Los Angeles Games after the International Olympic Committee implemented a new eligibility policy on Thursday.

Eligibility for women’s competition will be determined by a one-time, mandatory genetics test, according to the IOC. The test requires screening through saliva, a cheek swab or a blood sample.

No woman who transitioned from being born male competed at the 2024 Paris Summer Games, and it is unclear if any transgender women currently compete at an Olympic level. The new policy, however, aligns with President Trump’s executive order banning transgender athletes from participating in women’s or girls’ sporting events in the United States.

The eligibility policy approved by the IOC is not retroactive and does not apply to recreational sports programs.

The IOC said in a statement that it “protects fairness, safety and integrity in the female category.

“Eligibility for any female category event at the Olympic Games or any other IOC event, including individual and team sports, is now limited to biological females.”

Until now, individual sports federations determined whether transgender women were allowed to compete in women’s categories, with the IOC providing only recommendations. Sports that placed restrictions on transgender athletes included track and field, boxing, swimming and rugby.

The IOC Executive Board approved the new policy after 18 months of study. It mirrors the guidelines approved by the World Athletics Council in June, determining eligibility for the female category through screening for the absence or presence of the SRY gene.

The IOC policy leans on scientific research that considers the presence of the SRY gene fixed for life and represents evidence that an athlete has experienced male sex development. Athletes who screen negative for the SRY gene will be eligible to compete in women’s sports.

SRY (which stands for sex-determining region Y gene) is found on the Y chromosome. In the cell, it binds to other DNA, leading to testis formation, according to the National Library of Medicine. Even men who lack Y chromosomes still have a copy of the SRY region on one of their X chromosomes, which accounts for their maleness.

Jane Thornton, the IOC medical and scientific director, last year presented to the executive board findings that transgender athletes born with male sexual markers retained physical advantages, even those that had received treatment to reduce testosterone.

Kirsty Coventry, a former gold-medal Olympics swimmer from Zimbabwe, was elected a year ago as the first woman president of the IOC. She campaigned on the importance of protecting the women’s category.

“At the Olympic Games, even the smallest margins can be the difference between victory and defeat,” Coventry said Thursday in a statement. “So, it is absolutely clear that it would not be fair for biological males to compete in the female category.”