But I am smarter than ya... :)
I got sidetracked on weight. Lets talk PRESSURE.
If they filled their balls in a nice, warm room at 80 F to 13 psig.
Then the balls would automatically depressure to about 10.4 psig if they are playing outside in the cold at 30 F...
Assuming an ideal gas
P1 = 13 psig => 27.7 psia
T1 = 80 F == +460 ==> 540 R
T2 = 30 F == +460 ==> 490 R
P2 = P1 * (T2/T1) = 27.7 * (490/540) = 27.7 * 0.907 = 25.1 psia
P2 = 25.1 psia ==> 10.4 psig
Now THAT’S what I was gettin’ at ... ‘cept ... if both teams are mandated to fill their balls to x ... both teams will experience the same increase or loss ... so there’s no difference