  Hiring a head coach of a college sports team is vital which will definitely
have a great influence on the later development of the team. However, a lot of
attention has been focused on each coach's individual features. A systematic
and quantitative analysis of the whole coach hiring market is lacking. In a
coach hiring network, the coaches are actually voting with their feet. It is
interesting to analyze what factors are affecting the "footprint" left by those
head coaches. In this paper, we collect more than 12,000 head coach hiring
records in two different popular sports from the NCAA. Using network-based
methods, we build the coach hiring network in the NCAA men's basketball and
football. We find that: (1).the coach hiring network is of great inequality in
coach production with a Gini coefficient close to 0.60. (2).coaches prefer to
work within the same geographical region and the same division to their alma
maters'. (3).the coach production rankings we calculated using network-based
methods are generally correlated to the authoritative rankings, but also show
disaccord in specific time period. The results provide us a novel view and
better understanding of the coach hiring market in the NCAA and shed new light
on the coach hiring system.
