Things move fast in boxing.
Yesterday, Tim Tszyu was gearing up to face Keith Thurman in a non-title bout to headline Prime Video's maiden pay-per-view event.
Now, the Australian will take on Sebastian Fundora in a super welterweight unification fight at Las Vegas' T-Mobile Arena on March 30.
MORE: Who is Sebastian Fundora? 'Towering Inferno' to face Tszyu
Here's what we know:
Which titles are Tim Tszyu and Sebastian Fundora fighting for?
Tszyu is currently the WBO super welterweight champion.
Despite holding that title, the WBO had said they wouldn't be sanctioning his fight with Thurman as a title bout because the American, having fought once in the past five years and campaigned at welterweight, wasn't ranked at 154-pounds.
However, the sanctioning body had confirmed that Tszyu would be stripped of the title if Thurman was victorious.
With Thurman now out of the picture thanks to a bicep injury, Fundora has stepped up to take his place.
Fundora (20-1-1) has previously held the interim WBC title at super welterweight and sneaks into the WBO's rankings at 15th, making him eligible to fight for the title.
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"The Towering Inferno" was already set to face Serhii Bohachuk for the vacant WBC belt on the Tszyu vs. Thurman undercard.
When Thurman got injured, Fundora was shifted to the main event, which, it's now been confirmed, will also see the WBC strap go on the line.
That means the winner of Tszyu vs. Thurman will hold the WBO and WBC titles, with the IBF currently vacant and the WBA belt in the hands of Israil Madrimov.
For his part, Bohachuk hasn't been forgotten and will fight Brian Mendoza for the interim WBC title on the March 30 card.
MORE: Sporting News' super welterweight rankings
Tim Tszyu vs. Sebastian Fundora fight card
- Tim Tszyu (c) vs. Sebastian Fundora for the WBO and WBC super welterweight titles
- Rolando Romero (c) vs. Isaac Cruz for the WBA super lightweight title
- Erislandy Lara (c) vs. Michael Zerafa for the WBA middleweight title
- Julio Cesar Martínez vs. Angelino Cordova for the WBC flyweight title
- Elijah García vs. Kyrone Davis; middleweight
- Serhii Bohachuk vs. Brian Mendoza for the interim WBC super welterweight title