High School: Graduated from Glacier Park (WA) this spring… 2024: 2.31 ERA, 65 K, 15 H, 20 BB over 33.1 IP in 7 games as a senior... 2023: 2.80 ERA, 25 K, 4 H, 7 BB over 10 IP in 3 games as a junior… 2022: 1.88 ERA, 37 K, 6 H, 18 BB over 18.2 IP in 5 games as a sophomore…

2024 First Team All-WESCO 4A pitcher and utility player as well as co-MVP... 2023 First Team All-WESCO 4A… 2023 First Team All-Area Snohomish County… 2022-23 Northwest Scout Games selection… 2023 Area Code selection from the Kansas City Royals…

AppleSox head coach Mitch Darlington: “He’s a kid that’s polished beyond his years. We expect him to either step into a rotation role or a lefty who is going to get us out of a tough situation out of the bullpen.”

Gonzaga head coach Mark Machtolf: "Karsten checks every box you look for in a recruit. Power left-handed pitcher, great student, and a great person. Already equipped with a low 90's fastball, and power slider, we think he has a chance to be special."