The worst news a promoter can get is when one of his main event fighters is injured and forced to pull out close to the night of the event. Sadly for Tom Brown of TGB Promotions, that's exactly the hand he was dealt on Monday. Former world champion Keith Thurman suffered a biceps injury in training on Sunday and was forced to withdraw from his March 30 bout against Tim Tszyu at T-Mobile Arena in Las Vegas.

Thurman-Tszyu was set to headline the Premier Boxing Champions' debut with Amazon Prime Video, and it was on pay-per-view. Less than two weeks before fight night, much of the card had to be re-worked.

Brown, the PBC and all others involved did a great job to save the show. Sebastian Fundora will fight Tszyu in the reconstituted main event. The bout will be for both the WBC and the WBO super welterweight titles. More on that in a bit.

Fundora had been scheduled to fight Serhii Bohachuck on the undercard for the WBC title. So Bohachuk will instead face Brian Mendoza for the interim WBC super welterweight title and the mandatory spot for the Tszyu-Fundora winner's WBC belt.

Thankfully for the fighters who have trained for so long, the show will go on. And Tszyu-Fundora is perhaps a more intriguing fight than Thurman-Tszyu, so that's good for the fans who plan to watch.

But there are plenty of issues with this show that need to be addressed. Where to start is the issue.

Let's begin with the fact that the original show was going to headline the PBC's first event in a new partnership with Amazon Prime Video and it was beginning with a questionable, at best, main event. There is no problem with a Thurman-Tszyu fight in and of itself. The problem is having that be your main event, on pay-per-view, in a deal with your new partner, a partner who has never been involved in boxing before but who is a global business powerhouse.

You would think the PBC would have wanted to put its absolute best foot forward when it began the Prime Video deal and started with the best main event it could make. Instead, it put on Thurman, who has fought once in four years and not at super welterweight. If that fight had gone forward on pay-per-view, it was at best a 100,000-sale fight. It wasn't a fight that appealed to any demographic other than the most hard core boxing fans.

Perhaps Amazon, going into its first boxing event, wanted to test the waters and see what it takes to do a mega-show, but that seems unlikely. Amazon is a massive company with almost unlimited resources.

Now, with Fundora in the main event, it's likely if it will do half of the projected buys it would have done with Thurman. This is a fight that should be given for free and help introduce fans to the brand. You need to spend money to make money and doing this free would have been an investment in the product's future success.

There are two other issues that are infuriating if you look at boxing as a sport, and both involve world titles.

Fundora got knocked out for a 10-count in his last fight. How does that enable him to fight for a world title? And he's not just fighting for a title, he's fighting for both the WBC and WBO titles, so he'll be the unified champion if he wins. Unified champions hold an elevated position in this sport -- or at least should be -- and it's incomprehensible that two sanctioning groups would earmark this for a belt.

There's no problem with the fight; it's a good save under the circumstances and has a chance to be entertaining. It just doesn't deserve to be for a title.

That brings us to the Bohachuk-Mendoza bout. It was great organizers saved the Bohachuk fight after Fundora was moved to the main event. But how is this title for the interim WBC super welterweight championship when the actual WBC super welterweight championship is being contested in the main event? It makes sense to give Mendoza and Bohachuk assurances that they'd meet the Tszyu-Fundora winner, but to give them a belt is in this spot is ridiculous and demeans the value of the title.

It further confuses a public which already has trouble understanding what goes on in boxing. Boxing is the ultimate back-room sport where the rules far too frequently seem to be made up on the fly and changed under the cover of darkness for the convenience of those who stage the events.

None of it makes an iota of sense, but hey, that's boxing.