Oregon School Activities Association
OnPoint Community Credit Union
Riverdale

Riverdale Boys Basketball Program

School
Classification
3A (Public)
Regular District
3A-2 Coastal Range League

Team Staff
Head Coach
Derek Duman
Asst. Coaches
Dave Williams, Sawyer Heald, Tim Ehlers
JV Head Coach
Tim Ehlers
Program Information
Classification
3A (2025-26)
League
3A-2 Coastal Range League
Officials
Portland Basketball Officials Association
Varsity Contests
22 / 22
Ranking Information
Overall Record
1-21
League Record
1-11
OSAA Rank
#48
RPI Record
1-21
RPI Rating
281.017
RPI Rank
#48
Colley Record
1-21
Colley Rating
-15.213
Colley Rank
#48

Ranking Frozen
10:56 pm, Feb. 21, 2026

» Go Mavericks!
NFHS Network
Status Details Date Start Time Opponent Dismiss Depart Return
Done Jamboree W 12/3/25 4:30pm vs. Valor Christian / Tualatin Valley Acad.
Done Jamboree W 12/3/25 6pm vs. De La Salle North Catholic
Done Jamboree W 12/3/25 8:30pm vs. Oregon Episcopal
L 31-55 Non-League F 12/5/25 7:30pm vs. Gervais
L 30-55 Non-League S 12/6/25 5:30pm vs. Heppner
L 29-55 Non-League M 12/8/25 7:30pm @ Horizon Christian, Tualatin
L 44-47 Non-League R 12/11/25 7:30pm @ Central Linn 3:15pm 3:30pm
L 30-64 Non-League W 12/17/25 6pm @ Riverside, WLWV 4:30pm
L 52-62 Non-League
Tournament 		F 12/19/25 7:30pm vs. Gaston (Riverdale Holiday Tournament - Riverdale)
L 33-50 Non-League
Tournament 		S 12/20/25 1:45pm vs. Catlin Gabel (Riverdale Holiday Tournament - Riverdale High School)
L 24-66 Non-League S 12/27/25 1:30pm vs. Umatilla
Done Exhibition T 12/30/25 4:30pm vs. Australian Travel Team (Other)
L 40-63 Non-League F 1/2/26 6pm vs. Clatskanie
L 43-52 League W 1/7/26 6pm vs. Corbett
L 43-63 League F 1/9/26 6pm @ Yamhill-Carlton 3:30pm 3:45pm
L 30-77 League T 1/13/26 6pm vs. Neah-Kah-Nie
L 45-64 Non-League R 1/15/26 7pm @ North Marion
L 28-78 League W 1/21/26 6pm @ Banks 4:15pm
L 47-78 League F 1/23/26 6pm vs. Warrenton
L 43-57 League T 1/27/26 6pm @ Rainier 3:15pm 3:30pm
L 39-62 League M 2/2/26 7:30pm vs. Yamhill-Carlton
L 31-70 League W 2/4/26 7:30pm @ Neah-Kah-Nie 2:45pm 3pm
L 38-67 League M 2/9/26 7:30pm @ Corbett 3:30pm 3:45pm
L 36-58 League T 2/10/26 7:30pm vs. Banks
L 30-58 League R 2/12/26 7:30pm @ Warrenton 2:45pm 3pm
W 57-56 League T 2/17/26 7:30pm vs. Rainier
OSAA 3A Rank
#48
Overall Record
1-21
League Record
1-11
Ranking Frozen
10:56 pm, Feb. 21, 2026
RPI Rank
#48
RPI Record
1-21
RPI Rating
281.017
WWP
0.036
OWP
0.413
Colley Rank
#48
Colley Record
1-21
Colley Rating
-15.213
All 3A Rankings
Frequently Asked Questions
Rankable Completed Contests
Opponent Result Counted Weight OAWP OAR Colley
12/5 Gervais (2A) LH 0.0 1.2 0.364 8-14 Yes
12/6 Heppner (2A) LH 0.0 1.2 0.696 16-7 Yes
12/8 Horizon Christian, Tualatin LA 0.0 0.8 0.375 9-15 Yes
12/11 Central Linn (2A) LA 0.0 0.8 0.091 2-20 Yes
12/17 Riverside, WLWV LA 0.0 0.8 0.143 3-18 Yes
12/19 Gaston (2A) LH 0.0 1.2 0.292 7-17 Yes
12/20 Catlin Gabel LH 0.0 1.2 0.083 2-22 Yes
12/27 Umatilla LH 0.0 1.2 0.583 14-10 Yes
1/2 Clatskanie (2A) LH 0.0 1.2 0.542 13-11 Yes
1/7 Corbett LH 0.0 1.2 0.292 7-17 Yes
1/9 Yamhill-Carlton LA 0.0 0.8 0.545 12-10 Yes
1/13 Neah-Kah-Nie LH 0.0 1.2 0.682 15-7 Yes
1/15 North Marion (4A) LA 0.0 0.8 0.348 8-15 Yes
1/21 Banks LA 0.0 0.8 0.591 13-9 Yes
1/23 Warrenton LH 0.0 1.2 0.522 12-11 Yes
1/27 Rainier LA 0.0 0.8 0.143 3-18 Yes
2/2 Yamhill-Carlton LH 0.0 1.2 0.545 12-10 Yes
2/4 Neah-Kah-Nie LA 0.0 0.8 0.682 15-7 Yes
2/9 Corbett LA 0.0 0.8 0.292 7-17 Yes
2/10 Banks LH 0.0 1.2 0.591 13-9 Yes
2/12 Warrenton LA 0.0 0.8 0.522 12-11 Yes
2/17 Rainier WH 0.8 0.8 0.143 3-18 Yes
22 contests 1-21
(WP)		 0.8 ÷ 22.0 = 0.036
(WWP) 		9.065 ÷ 22 opponents = 0.412
(OWP)
Opponent: Date and opposing team for this rankable contest.
Result: Result for this team: win (W), loss (L), or tie (T). The subscript indicates this team's designation: home team (H), away team (A), or at a neutral site (N).
Weight: Total amount of weighted points possible for this contest.
Counted: Amount of weighted points this team acquired for this contest based on the result.
OAWP: Opponent's Adjusted Winning Percentage, excluding this contest.
OAR: Opponent's Adjusted Record, excluding this contest.
Colley: Is this contest counted in the Colley method? Only contests between Oregon opponents in the same classification and ± 1 classification away are counted.
# C Name Position Grade Height
2 Ari Zeitzer G 11
4 Ronan Dutt-Ballerstadt G 12
5 Nader Rassouli W 10
11 Teddy Renaud P 11
12 Caleb Yates G 11
15 Gavin Harmon P 11
21 Kai Heath W 10
Status Details Date Start Time Opponent Dismiss Depart Return
Done Non-League F 12/5/25 4:30pm vs. Gervais [JV]
Done Non-League S 12/6/25 2:30pm vs. Heppner [JV]
Done Non-League M 12/8/25 4:30pm @ Horizon Christian, Tualatin [JV] 3pm 3:15pm
Done Non-League R 12/11/25 4:30pm @ Central Linn [JV] 12:30pm 12:45pm
Done Non-League R 12/18/25 6pm @ Oregon Episcopal [FR] 4:30pm
Done Non-League T 12/30/25 2:30pm vs. Australian Travel Team (Other)
Done Non-League F 1/2/26 4:30pm vs. Clatskanie [JV]
Done League W 1/7/26 4:30pm vs. Corbett [JV]
Done League F 1/9/26 4:30pm @ Yamhill-Carlton [JV] 2:15pm 2:30pm
Done League T 1/13/26 3pm vs. Neah-Kah-Nie [JV]
Done Non-League F 1/16/26 4:30pm vs. Oregon Episcopal [FR]
Done League W 1/21/26 4:30pm @ Banks [JV2]
Done League F 1/23/26 3pm vs. Warrenton [JV]
Done League T 1/27/26 4:30pm @ Rainier [JV] 1:30pm 1:45pm
Done League M 2/2/26 4:30pm vs. Yamhill-Carlton [JV]
Done League W 2/4/26 4:30pm @ Neah-Kah-Nie [JV] 1:15pm 1:30pm
Done Non-League F 2/6/26 6pm vs. Blanchet Catholic [JV]
Done League M 2/9/26 4:30pm @ Corbett [JV]
Done League T 2/10/26 4:30pm vs. Banks [JV2]
Done League R 2/12/26 4:30pm @ Warrenton [JV] 11:45am Noon
Done League T 2/17/26 4:30pm vs. Rainier [JV]
# C Name Position Grade Height
1 Charlie Makuakane G 9
5 Noam O'Glasser G 9
11 Sam Johnson G 9
13 Jacob Blackstein G 9
20 Adrian Gnass W 9
22 Trevor Yatcyshyn W 12
23 Duncan Hill G 9
24 Asher Millkey W 9
35 Jasper Gamblin G 9
Status Details Date Start Time Opponent Dismiss Depart Return
Done Non-League R 1/15/26 5:30pm @ North Marion [JV2] (North Marion-Gym 3)
# C Name Position Grade Height
No player information to display, yet.




No Team Photo Found