Peter Duggan wrote:
... surely a knowing reference ...
One would hope, but even so I have two misgivings: If use of the word here is not sheer dumb coincidence, then 1) either the writer has fallen into the trap of making easy assumptions about the reader, for not everyone will know of Stram (myself, for one, until you brought it up); just because the reader may have enough interest in sports to read the article, it doesn't mean they will have any abiding interest in gridiron football or its lore (myself again, in case anyone hasn't already guessed). Or else 2) the writer came across Stram's malapropism once upon a time, and without digging any further, naively took it as proper usage, and saved it for such a rainy day.
At this point I'm inclined to agree that it's probably the former, but the very fact that we're trying to make sense of it points to careless writing; this is the first time I've ever come across "matriculate" used in this way, so it's not as if it's famous enough for a writer to hang their hat on as a jocularity. In American sports writing as I know it (any writing, for that matter), normally one doesn't see this sort of thing without a nod to the source. Even the much more famous sayings of Yogi Berra are not usually flown without passing mention of the man himself. It's just good form to do so; due attribution is due reverence, you could say. It also assures us that the writer is informed. Without that, on first impression this one simply comes off as not knowing his own language.