Academy of Our Lady of Guam pitcher Sadie Guerrero threw her second no-hitter in three days, an 11-0 shutout of the Guam High School Panthers as the Interscholastic Sports Association High School Softball regular season came to a close Thursday at Academy’s home diamond, Tai Field.

On Tuesday against Tiyan High School, Guerrero racked up 11 strikeouts in a 12-0 shutout by the two-time defending champions. On Thursday, the senior struck out 10 of the 16 batters she faced and was one error away from a perfect game.

“Working with Sadie, she’s the most hardworking person. She’s, like, more than a perfectionist,” said Cougars catcher Mariana Terlaje, who also caught the no-no on Tuesday. “That’s her skill, and she’s worked so hard to just hone in on it. She’s had her good days, but today was just amazing for her. She gets so into it.”

Guerrero and the Cougars have lost just one game in two years since naming Guerrero the starter as a sophomore. They finished last season undefeated and have repeated the feat in 2026 so far.

Panthers pitcher Eralyn Miller retired the top of the Cougars’ lineup in order, including a double play.

But Academy did major damage in the second inning, scoring nine runs, mostly on Panthers errors. Mariana Terlaje hit a two-RBI double and Beatrice Antonio had an RBI on a fielder’s choice in the early surge.

The Panthers turned another double play against the Cougars in the third inning. In the fourth, the Cougars again did their damage with two outs, scoring two runs in what would be their final at-bat.

Panthers third baseman Hayiden Oskisin hit a routine grounder to third, but the throw to first was wide left and wound up in a no-play zone. The only Panther to reach base was stranded, as Guerrero needed 12 pitches to strike out the final batters.

Academy, the top seed, will face the Okkodo High School Bulldogs in a softball semifinal scheduled for 10 a.m. Saturday at its home field in Mangilao. At the same time, the John F. Kennedy High School Islanders will visit the George Washington High School Geckos in the other semifinal. The title game is set for 1 p.m. Feb. 28 at Okkodo High.

“We’re going to approach the playoffs like any other game. No matter what we’ve seen, every team is a different beast in the playoffs,” said Cougars coach Marissa Maratita-Matanane. “We know it’s going to be a good game, a challenging one, and we are prepared for that. We take nothing for granted.”

Guerrero brushed aside individual recognition and said the reason she was able to focus on the mound is because she loves the game and the family she has built in the Cougars program. She said she is not looking to whiff or deceive every batter she faces. Ironically, she expects batters to connect on her 50 mph-plus pitches.

“I trust in my defense, and I know that they trust me, too. My job is to throw strikes, so I just give it to the batters and trust that the defense has my back. I know them as players and as people, and I know that they’re hungry to field the ball.”