Boxing in the UK has been put on hold for January due to the spiralling number of Covid cases.
The British Boxing Board of Control made the announcement yesterday citing the impact the pandemic is having on the NHS.
The decision is to be reviewed later this month but, as it stands, Lee McGregor's European bantamweight title fight against Karim Guerfi and welterweight Josh Kelly's European title fight with David Avanesyan are off.
Matchroom Sport promoter Eddie Hearn said he was hopeful his fighters would resume in February.
"Hopefully that will be in the UK but we will proceed regardless, safely and by any means necessary. To the fighters out there, stay ready!" he wrote on Twitter.
Meanwhile, Ryan Garcia believes "it showed a lot of people who I really am" after he rose from an early knockdown to hand Luke Campbell the first stoppage defeat of his professional career.
Campbell was an underdog with the bookmakers but decked his much-hyped opponent in the second round of their lightweight encounter with a savage left hook to the jaw at the American Airlines Center in Dallas.
The unbeaten Garcia rallied, though, and Campbell was saved by the bell following an onslaught at the end of the fifth before being counted out two rounds later after a vicious left hook to the body.
It was Campbell's fourth defeat of a 24-fight professional career and while the Hull southpaw said afterwards he was "heartbroken", Garcia revelled in his biggest victory to date as he claimed the WBC interim title.
The American (21-0, 18KOs), who was carried to the ring on a throne and wore a crown in his ringside interview on DAZN, said: "It definitely showed a lot of people who I really am.
"I chose to be a champion, I wasn't going to let nothing stop me, even when he dropped me. He caught me, I was like 'yo, I got dropped, this is crazy'.
"I've never been dropped in my life. I think I got a little too excited over the moment, I knew I was in control.
"I had to adjust and calm down because I knew I could beat him, I just had to get back up and show everybody what a warrior really is like."