NWSL Rules
🏛️Official — NWSLThe Ball
Verdict
NWSL matches use a FIFA Quality Programme approved match ball: spherical, 68–70 cm circumference, 410–450 g at the start of the match, and inflated to 0.6–1.1 atmospheres of pressure at sea level (...
Source: Law 2
Send this to your friend — argument over.
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