Mattson is the top 3-point shooter in West Coast Conference
The 5-foot-9 junior guard pumped in a career-high 16 points on the strength of 4-for-4 shooting from deep in an 81-79 win over Pepperdine in Oregon.
Mattson, of West Valley fame, increased her season 3-point shooting percentage to .456, which ranks No. 1 in the WCC.
She has made 26-of-57 attempts on the season.
Mattson is now back in the starting lineup for Portland and averaging 4.7 points in 24 games.