为什么只有被colts 抄截的球是少两磅的。其他十个球都少一磅？
As one league source has explained it to PFT, the football intercepted by
Colts linebacker D’Qwell Jackson was roughly two pounds under the 12.5 PSI
minimum. The other 10 balls that reportedly were two pounds under may have
been, as the source explained it, closer to one pound below 12.5 PSI. http://profootballtalk.nbcsports.com/2015/01/25/nfl-bears-plent
