All of the players give it everything they have. They're not ashamed one bit, no matter how goofy they look with a beard. And trust me, many of them look goofy. They're not ashamed to grow their beards because they want all to know that they've made it to the playoffs. They want it to be crystal clear why they're here, and what they're intent is. This is how we should be with our beliefs.
Paul writes to the Romans and says, "For I am not ashamed of the gospel of Christ..." (Romans 1:16). He wore his religion on his sleeve, or his "beard" on his "face." He wanted everyone to know what he stood for, and we should do the same. The real question is how? How can we let everyone know? There's no possible way we can talk to everyone and growing a beard just doesn't cut it. 1 Timothy 4:12 gives us the answer, "...be thou an example of the believers, in word, in conversation, in charity, in spirit, in faith, in purity."