PITTSBURGH — As I wrote on Monday after the Pirates’ home-opening win over the Minnesota Twins pushed their record to 4-0 to start the year, it’s still very, very early.

Sure, there’s reason for enthusiasm with that kind of start, even when much of it came against a Detroit team that many are predicting to finish in the cellar of the AL Central. But still, it’s too early to put a lot of stock in the Pirates’ results.

The same thing goes for individual numbers. Unless you think that Michael Feliz’s ERA will stay at 18.00 and Gregory Polanco’s OPS will remain 1.425, it’s hard to put a lot of stock into what’s been done from a statistical standpoint.

But unlike the numbers that we mostly glossed over for the six weeks of spring training, there are lessons to be learned in what’s happ...

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