There's an interesting interview with OFC man Jonathan Burn up here, where he talks about their motivation for returning to an "open-weight" format of sorts, and how, as fans, they're hoping to provide the best night of action possible as they head to the Metro Arena on April 18th.
“The main reason we decided to have an open weight tournament is because they aren’t commonplace anymore,” says Jonathan Burn, Head of Promotions for the OFC. And it’s mostly for good reason that open weight tournaments are scarce these days, given that injuries and large weight disparities can muddle up the results of such an event. But the OFC has done their homework.
“The tournament is scheduled over four events,” says Burn. “We wanted a tournament that was going to span over events rather than the old one-night eight-man tournaments. At least if one of the winners does break a hand, an ankle or tears a muscle they can still proceed to the next round.”