Both are from the newly sports-minded WSJ.
First, in recent years, English teams have been getting the upper hand over their Italian counterparts, a reversal from prior decades. Why is this? My own answer is that "catenaccio," the Italian style of playing, is a form of implicit collusion. The pace is slow and defensive-minded. It is failing in an era in which skill and pace are increasingly prevalent on the pitch. Beckham is at AC Milan now because that is where he has a comparative advantage in the twilight of his career, as he has lost a step or two in the past decade. This WSJ story, "Why Can't Italy Beat England in Soccer?" touches on this briefly, and covers other interesting angles on the issue.
Second, here's a paper "Interracial Workplace Cooperation: Evidence from the NBA," discussed in the WSJ's Real Time Economics Blog. The claim: assists in the NBA are race-neutral. Surely work a look for some of our readers.