Katie Taylor has wasted no time getting back to work after Christmas as she prepares for another massive year in 2020.
The Bray boxer was crowned the undisputed lightweight champion and also won the WBO junior-welterweight title in the past 12 months, but this year could be even bigger for her.
Fights with fellow champions Amanda Serrano and Cecilia Braekhus are high on Taylor's list of priorities, while she also wants a rematch with Delfine Persoon.
A photo posted on her Instagram account shows Taylor back sparring, while a video shows her working out with a medicine ball.
The 2012 Olympic gold medalist could make history in her first fight of the year by facing Serrano in the first all-female main event at Madison Square Garden.
Speaking before Christmas, Taylor described a bout with Serrano as "one of the biggest fights in boxing right now".
She told told Sky Sports News: "I just want to be involved in big fights really and there's so many possible opponents out there for me.
"There's the likes of Amanda Serrano, who's a seven-weight world champion - that's probably one of the biggest fights in boxing right now.
"Obviously the rematch with Delfine Persoon and there's a possibility of stepping up another weight class and fighting Cecilia Braekhus, who's another undisputed champion.
"So you can imagine, undisputed champion against undisputed champion, these are history-making fights."
Norway's Braekhus is the undisputed welterweight champion and Taylor admits it could take time for the fight as she would need to bulk up for it.
Braekhus is also signed to Eddie Hearn's Matchroom Boxing, so the fight shouldn't be difficult to make.
Taylor added: "Definitely an easy fight to make. She is a welterweight and it's a fight where I'm going to have to build myself up to I think.
"I'm obviously naturally a lightweight fighter, even though I stepped up to light-welterweight in the last fight, I make lightweight very, very comfortably, so it is a fight that's going to take time I think.
"But it is absolutely a history-making fight… undisputed champion against undisputed champion, I don't think that's ever been done before, so that will be a very, very special fight."
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