Mount Si Baseball

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Mount Si Baseball Mt Si Baseball is part of the Kingco 4A Conference in Washington state.

๐—œ๐—ป๐˜๐—ฟ๐—ผ๐—ฑ๐˜‚๐—ฐ๐—ถ๐—ป๐—ด ๐—ผ๐˜‚๐—ฟ ๐—ป๐—ฒ๐˜„ ๐—ฉ๐—ฎ๐—ฟ๐˜€๐—ถ๐˜๐˜† ๐—›๐—ฒ๐—ฎ๐—ฑ ๐—–๐—ผ๐—ฎ๐—ฐ๐—ตWe're excited to welcome Derek Decater as the new Varsity Head Baseball Coach at M...
09/24/2026

๐—œ๐—ป๐˜๐—ฟ๐—ผ๐—ฑ๐˜‚๐—ฐ๐—ถ๐—ป๐—ด ๐—ผ๐˜‚๐—ฟ ๐—ป๐—ฒ๐˜„ ๐—ฉ๐—ฎ๐—ฟ๐˜€๐—ถ๐˜๐˜† ๐—›๐—ฒ๐—ฎ๐—ฑ ๐—–๐—ผ๐—ฎ๐—ฐ๐—ต

We're excited to welcome Derek Decater as the new Varsity Head Baseball Coach at Mount Si High School! A Washington native and Skyline High School standout, Derek was a four-year varsity letterwinner and two-time KingCo Player of the Year before playing outfield at the University of Arizona, where he earned Freshman All-American honors.

Derek brings a wealth of playing, coaching, and player-development experience to the Wildcat program, including time on the Mount Si staff before stepping into this Head Coaching role.

His philosophy: build competitive, confident, and accountable young men who represent Mount Si and the Snoqualmie Valley the right way.

Welcome Coach Decater! โšพ๏ธ

The work before the season starts now. Open Gym kicks off September 14 at the MSHS Weight Room โ€” Mon/Wed 3:30-4:30, Thu...
09/09/2026

The work before the season starts now.

Open Gym kicks off September 14 at the MSHS Weight Room โ€” Mon/Wed 3:30-4:30, Thurs 2:45-3:45. 100% optional, all are welcome. Go 'Cats! โšพ๏ธ๐Ÿพ

Get on our email list now so you don't miss news of offseason workouts, future open field dates sponsored by the Booster...
09/09/2026

Get on our email list now so you don't miss news of offseason workouts, future open field dates sponsored by the Booster Club, gear info, and more.

๐Ÿ”—https://forms.gle/J9igJJ4hGnkyYwSH7

(Link in bio)

The application window is now open for the ๐—›๐—ฒ๐—ฎ๐—ฑ ๐—•๐—ฎ๐˜€๐—ฒ๐—ฏ๐—ฎ๐—น๐—น ๐—–๐—ผ๐—ฎ๐—ฐ๐—ต position at Mount Si High School. ๐—”๐—ฝ๐—ฝ๐—น๐˜† ๐—ต๐—ฒ๐—ฟ๐—ฒ โžก๏ธ ๐—ต๐˜๐˜๐—ฝ://๐—ฏ๐—ถ...
08/04/2026

The application window is now open for the ๐—›๐—ฒ๐—ฎ๐—ฑ ๐—•๐—ฎ๐˜€๐—ฒ๐—ฏ๐—ฎ๐—น๐—น ๐—–๐—ผ๐—ฎ๐—ฐ๐—ต position at Mount Si High School. ๐—”๐—ฝ๐—ฝ๐—น๐˜† ๐—ต๐—ฒ๐—ฟ๐—ฒ โžก๏ธ ๐—ต๐˜๐˜๐—ฝ://๐—ฏ๐—ถ๐˜.๐—น๐˜†/๐Ÿฐ๐˜…๐—ต๐—ฅ๐Ÿด๐—ญ๐˜†

As the Mount Si Baseball Booster Club, we're excited to spread the word and encourage qualified candidates who are passionate about developing student-athletes, building a positive culture, and leading a competitive baseball program to apply.

The selection process is managed by Mount Si High School / Snoqualmie Valley School District.

๐—Ÿ๐—ฎ๐˜€๐˜ ๐—ฐ๐—ต๐—ฎ๐—ป๐—ฐ๐—ฒ...๐˜๐—ถ๐—ฐ๐—ธ๐—ฒ๐˜ ๐˜€๐—ฎ๐—น๐—ฒ๐˜€ ๐—ฐ๐—น๐—ผ๐˜€๐—ฒ ๐—ง๐—ต๐˜‚๐—ฟ, ๐Ÿณ/๐Ÿฏ๐Ÿฌ ๐Ÿญ๐Ÿญ:๐Ÿฑ๐Ÿต๐—ฝ๐—บ - ๐—Ÿ๐—ถ๐—บ๐—ถ๐˜๐—ฒ๐—ฑ ๐˜๐—ถ๐—ฐ๐—ธ๐—ฒ๐˜๐˜€ ๐—ฟ๐—ฒ๐—บ๐—ฎ๐—ถ๐—ป.๐ŸŽ†Fireworks after the game๐ŸŽŸ๏ธSave up to 60% n...
07/30/2026

๐—Ÿ๐—ฎ๐˜€๐˜ ๐—ฐ๐—ต๐—ฎ๐—ป๐—ฐ๐—ฒ...๐˜๐—ถ๐—ฐ๐—ธ๐—ฒ๐˜ ๐˜€๐—ฎ๐—น๐—ฒ๐˜€ ๐—ฐ๐—น๐—ผ๐˜€๐—ฒ ๐—ง๐—ต๐˜‚๐—ฟ, ๐Ÿณ/๐Ÿฏ๐Ÿฌ ๐Ÿญ๐Ÿญ:๐Ÿฑ๐Ÿต๐—ฝ๐—บ - ๐—Ÿ๐—ถ๐—บ๐—ถ๐˜๐—ฒ๐—ฑ ๐˜๐—ถ๐—ฐ๐—ธ๐—ฒ๐˜๐˜€ ๐—ฟ๐—ฒ๐—บ๐—ฎ๐—ถ๐—ป.

๐ŸŽ†Fireworks after the game
๐ŸŽŸ๏ธSave up to 60% normal gameday prices
โœ…Support Mount Si Baseball - % of ticket sales helps fund the 2027 season activities for the Wildcats

Get your tickets at: https://www.mountsibaseball.com/mariners-tickets

Time is running out...ticket sales close Thur, 7/30 11:59pm. ๐ŸŽ†Fireworks after the game๐ŸŽŸ๏ธSave up to 60% normal gameday p...
07/25/2026

Time is running out...ticket sales close Thur, 7/30 11:59pm.

๐ŸŽ†Fireworks after the game
๐ŸŽŸ๏ธSave up to 60% normal gameday prices
โœ…Support Mount Si Baseball - % of ticket sales helps fund the 2027 season activities for the Wildcats

Get your tickets at: https://www.mountsibaseball.com/mariners-tickets

Have you taken advantage of this great deal? Join us at the Mount Si Baseball Community Day at T-Mobile Park, next Frida...
07/21/2026

Have you taken advantage of this great deal? Join us at the Mount Si Baseball Community Day at T-Mobile Park, next Friday night, July 31, 7:10pm as the Mariners take on the Twins.

๐ŸŽ†fireworks after the game
๐ŸŽŸ๏ธdeeply discounted tickets - up to 60% normal game day prices
โœ…support Mount Si Baseball

Get your tickets at: https://www.mountsibaseball.com/mariners-tickets

MLB All-Star break is a the perfect time to secure your discounted Mariners tickets for Fri 7/31 7:10pm and join us at t...
07/15/2026

MLB All-Star break is a the perfect time to secure your discounted Mariners tickets for Fri 7/31 7:10pm and join us at the Mount Si Baseball Community Day.

๐ŸŽ†firework night after the game
๐ŸŽŸ๏ธdeeply discounted - up to 60% normal game day prices
โœ…support Mount Si Baseball

Get your tickets at: https://www.mountsibaseball.com/mariners-tickets

The next opportunity is here. The 'Cats will head to Eastlake HS for a 4:00pm first pitch in their opening round Distric...
05/07/2026

The next opportunity is here.

The 'Cats will head to Eastlake HS for a 4:00pm first pitch in their opening round District 1/2 matchup vs Skyline. Win and advance.

๐ŸŽŸ๏ธhttps://gofan.co/event/6539304?schoolId=WA86276

Weโ€™re headed to Districts.Next up is the District 1/2 Tournament and the drive to qualify for State.The โ€™Cats begin the ...
05/06/2026

Weโ€™re headed to Districts.

Next up is the District 1/2 Tournament and the drive to qualify for State.

The โ€™Cats begin the journey Thursday 5/7 vs Skyline. First pitch 4:00pm at Eastlake HS in a loser-out game.

Win and advance to the double-elimination bracket.

Address

8651 Meadowbrook Way SE
Snoqualmie, WA
98065

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