Where: King County Aquatic Center (Federal Way).

When: Friday and Saturday.

Friday: 2A prelims, 9:45 a.m.; 3A prelims 2:30 p.m.; 4A prelims, 6:15 p.m.

Saturday: 2A finals, 10 a.m.; 3A finals, 2:30 p.m.; 4A finals, 6:30 p.m.

Tickets: All-tournament pass, adults $15, students and seniors $10. Single-day pass, adults $9, students and seniors $7.

Class 4A

Defending champion — Skyline.

Contenders — Newport, Skyline, Richland, Mount Rainier, Cascade (Everett).

Returning champions — Caitlin Chambers, Garfield, diving; Kenna Ramey, Federal Way, 50 freestyle; Felicity Cann, Stadium, 100 freestyle; Sage Speak, Inglemoor, 100 breaststroke; Lisa Bratton, Richland, 200 individual medley.

One to watch — Gig Harbor's Carolyn McCann skipped the high school swim season last year so she could focus on qualifying for the Olympic Trials. That presents a challenge for Inglemoor's Speak, the defending 100 breaststroke champion. McCann is the top seed with an automatic All-American time of 1:03.50, more than four seconds faster than Speak.

Class 3A

Defending champion — Mercer Island.

Contenders — Mercer Island, Bainbridge.

Returning champions — Anna Keane, Meadowdale, 50 and 100 freestyle; Monica Bottelberghe, Columbia River, 200 freestyle; Sarah Grundman, Bainbridge, 500 freestyle; Mackenna Briggs, Liberty, 100 backstroke; Kim Williams, Bellevue, 100 breaststroke; Grace Wold, Mercer Island, 100 butterfly and 200 IM.

One to watch — Mercer Island's Grace Wold, who will swim at the University of Wisconsin, is going after four more state titles to add to her collection of six. She is entered in the 200 IM, 100 butterfly and 200 and 400 freestyle relays.

Class 2A

Defending champion — Sehome.

Contenders — Tumwater, Lake Washington, Ellensburg, Port Angeles.

Returning champions — Julia Sanders, Hockinson, 50 freestyle and 100 butterfly; Kelsey Crane, Klahowya, 500 freestyle.

One to watch — Senior Julia Sanders of Hockinson is an eight-time state champion. She will go after two more as she competes in the 200 IM and 100 butterfly this week.

Ron Newberry