160 A PRIMER OF COLLEGE FOOTBALL
block and delay the opposing forwards who
are rushing down on the kick as much as
2. Defence to a Scrimmage or Down.—
(a) Theory of—A given territory to de¬
fend, and a certain number of men to do
it with, is the problem of the defence.
The territory to be defended is one hun¬
dred and sixty feet wide at all points
(width of the field) and one hundred and
fifteen feet deep, more or less, reckoned
from the centre of the field. The num¬
ber of men is eleven.
Whenever the two opposing elevens are
lined up on the field there is theoretically
a line of one hundred and sixty feet,
through any part of which the eleven on
the offensive may advance. The smaller
the territory is made through which an
advance is possible, the better that ter¬
ritory may be protected by the eleven
men. Eleven men can better protect ter¬
ritory A than territory B (Diagram 13).