USBC USBC Open Championships Sport

2021 USBC Open Championships (D & S)

USBC Open Championships

The 2021 USBC Open Championships D & S pattern presents a moderately challenging 39-foot medium oil pattern with a 2.64:1 ratio that demands precision and adaptability from competitors. The forward-heavy oil distribution (15.5mL vs 9.35mL reverse) creates a defined breakpoint along the boards while the 497 total boards crossed establish a relatively playable lane environment that rewards both direct and angular approaches. This setup, conditioned with FIRE & FIRE, produces moderate length through the fronts with defined angular motion on the backend, favoring bowlers who can control trajectory and adjust across multiple board targets rather than relying on extreme hook potential.

DISTANCE: 39' RATIO: 2.64:1 VOLUME: 24.85 FORWARD: 15.5 REVERSE: 9.35 PUMP: 50ยตL DROP BRUSH: 38' TANKS: FIRE & FIRE

โ€ข Reverse Drop Brush

39'
Length
24.9mL
Volume
2.64:1
Ratio
497
Boards Crossed
Forward 15.5 mL (62%)
Reverse 9.35 mL (38%)
Conditioner FIRE & FIRE
Pump Type 50ยตL
Dual Tank No
Peak Oil Board Board 6 (950 ยตL)

Board-by-Board Volume

Zone
Ratio
3L-7L : 18L-18R
Outside Track : Middle
2.64
8L-12L : 18L-18R
Middle Track : Middle
1.48
13L-17L : 18L-18R
Inside Track : Middle
1.04
18L-18R
Middle
1.00
18L-18R : 17R-13R
Middle Inside : Track
1.01
18L-18R : 12R-8R
Middle Middle : Track
1.34
18L-18R : 7R-3R
Middle Outside : Track
2.64
Zone
Ratio
0 0 150 150 300 300 450 450 600 600 750 750 900 900 1050 1050 124681012141618191918161412108642
Forward
Reverse

Forward Loads Data

# Start Stop Load Mics Speed T.Oil
1 2 38 4 50 18 7,400
2 6 35 1 50 18 1,500
3 7 34 1 50 18 1,400
4 8 33 2 50 18 2,600
5 10 31 1 50 18 1,100
6 13 29 1 50 18 850
7 15 27 1 50 18 650
8 2 38 0 50 18 0
9 2 38 0 50 22 0

Reverse Loads Data

# Start Stop Load Mics Speed T.Oil
1 2 38 0 50 30 0
2 15 26 1 50 22 600
3 13 28 2 50 18 1,600
4 11 30 1 50 18 1,000
5 9 32 1 50 18 1,200
6 5 35 1 50 14 1,550
7 2 35 2 50 14 3,400
8 2 38 0 50 14 0
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