A version of this article first appeared in the CNBC Sport newsletter with Alex Sherman, which brings you the biggest news and exclusive interviews from the worlds of sports business and media. Sign up to receive future editions, straight to your inbox. About two months ago, during CNBC Sport's Game Plan conference in Los Angeles, I asked the commissioners of the Big 12, the ACC and the Big East the same question: What will be the next big-time, breakout sport? All three answered volleyball. League One Volleyball is betting collegiate excitement will eventually translate to the professional ranks, following the path of the WNBA. The women's pro volleyball league returns with its second season in January. In just the past few weeks, LOVB has announced new teams coming to Los Angeles and Min

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