The members of Mercer Island’s undefeated girls swim and dive team did everything they could this season to win the 3A KingCo league crown.

On the final day of the KingCo championships this weekend, they did enough to win KingCo’s 4A crown as well.

Mercer Island swam away with the top score at the KingCo championship finals Saturday, Oct. 31 at Kamiak High School.

The Islanders’ team score of 695 was enough to top 4A league champs Skyline, who finished the meet with a score of 662. Newport rounded out the top three with a team score of 490.

“We were fairly confident that we could win the 3A title today,” Mercer Island coach Chris Conroy said. “To go out and win the whole meet was exciting.”

Mercer Island punctuated the close of the meet edging Skyline by two-tenths of a second to win the 400 freestyle relay.

It was the only relay Skyline would drop. The Spartans not only won both the 200 medley relay and 200 free relay, but also set KingCo records for both events in the process. Christina Bradley, Danika Himes, Kathy Lin and Sarah DiMeco won the 200 medley relay at 1:50.72, while the team of Kathy Lin, Stephanie Young, Bradley and DiMeco won the 200 free relay at 1:40.37.

Skyline wasn’t done there. Kathy Lin set a new KingCo record in the 50 free, winning with a time of 24.43. Sarah DiMeco was a second better than Mercer Island’s Sabrina Kwan to take the 100 backstroke at 58.37, also a KingCo record.

Bradley won two more events for the Spartans, winning the 200 free (1:55.05) and 500 free (5:10.53). And Lauren Sayles won the 100 breaststroke at 1:08.87.

For Mercer Island, Sabrina Kwan won the 200 IM at 2:12.49. Maeve Murdoch edged Skyline’s DiMeco and Newport’s Elisa Fang by half of a second to win the 100 fly at 59.27. And Alex Williams beat Interlake’s Erin Harvey by two-tenths of a second to take the 100 free at 54.88.

Bellevue’s Sarah Walsh won the diving event, registering a final score of 398.2.

In Saturday’s effort, Conroy said he was most impressed with Islander swimmers Lauryn Brittain and Ellie Williams. Brittain recorded the first two state cuts of her high school career in the 50 free (25.2) and 100 free (55.6). Williams registered her first state cuts of the season in the 200 IM (2:13.65) and 500 free (5:13.10), and also swam the anchor leg of the 400 freestyle relay.

Conroy acknowledged that having an impressive showing at KingCo is by no means the end goal for his team. But with the end of the season right around the corner, he was feeling pretty good about the strides his swimmers had shown.

“I’m really pleased with where we’re at,” Conroy said. “I think we still have a lot of time to drop this season, but being where we are today, I’m really confident heading into districts and state.”