SEATTLE — For the first time since 2000, the BYU women's volleyball team is headed to the NCAA Tournament Regional Semifinals after a stunning five-game upset of No. 6 Washington on Saturday.

The 30-28, 28-30, 25-30, 30-22, 15-13 win was just the second loss of the year for the Huskies on their home floor as Washington became the highest-seeded team to lose in the tournament.

"Beating Washington at home is a tremendous accomplishment," said BYU head coach Jason Watson. "We're as proud of our team as we've ever been. We were patient and composed when we could've let Washington get away from us."

BYU will now play Middle Tennessee State on Friday at 5 p.m. ET at Penn State.

Junior middle blocker Rachel Dyer led the way for BYU with a career-high 22 kills on .625 hitting to go along with six blocks. Senior Chelsea Goodman recorded yet another double-double, her 23rd of the season and 57th of her career, with 16 kills and 20 digs, the third time this year she has posted at least 20 digs.

Three other Cougars tallied double-digit kills as Erica Lott (17), Ashton Hansen (13) and Bryn Porter (10) reached double figures. Hansen led the Cougars with a .706 attack percentage and six blocks.

For the third time in the last four matches, BYU found itself playing a fifth game for all the marbles. Washington scored three of the first four points, but the Cougars battled back with a 4-1 run to go up 5-4. The two teams fought tooth and nail as the lead see-sawed back and forth until BYU scored four straight points to go up 12-9.

Dyer came up big for the Cougars with back-to-back kills on the slide to give BYU match point at 14-12. Goodman came flying in with a kill to give the Cougars a 15-13 win.