Brothers Jake Paul and Logan Paul are known for their celebrity bouts, and now Jake Paul is following up his destructive knockout of retired NBA star Nate Robinson with more celebrity callouts. This time, the YouTube star has voiced challenges to sports superstars LeBron James and Rob Gronkowski.

On November 29, YouTube star Jake Paul set foot in a packed stadium for one of the most unorthodox boxing cards ever. The card headlined an exhibition match, Mike Tyson vs Roy Jones Jr., and a celebrity bout between Jake Paul and NBA retiree Nate Robinson. Paul showcased a destructive boxing masterclass, knocking his opponent out with ease midway through the 2nd round. Now, it seems that the famous YouTube celebrity is itching to gear up for another celebrity showdown.

Related: Dana White Criticizes Boxing Over Logan Paul Vs Floyd Mayweather Fight

Recent posts from Jake Paul's social media accounts signal that he's looking to challenge other well-known sports stars to join him in the ring. In a tweet directed at LeBron James, he challenged the basketball icon to see "who the real king of Ohio is". He then followed up by tweeting at Rob Gronkowski, calling him "the NFL's biggest joke". Through a day of tweeting, Jake Paul ended up voicing additional challenges to NFL receivers Dez Bryant and Juju Smith-Schuster, Kanye West, and even Ellen DeGeneres. In light of the nature of these callouts, it's possible that the YouTube star is just having a bit of fun with his fellow celebrities. However, pulling in a big name like LeBron James would likely draw huge pay per view numbers. See Jake's tweet to LeBron below:

LeBron was actually called out earlier this year by UFC star Colby Covington after Covington made some controversial comments with regard to LeBron's stance on Black Lives Matter. However, the NBA star seems to have taken the high road by ignoring Covington's callout completely. It's likely that this will also probably be the case when it comes to Jake Paul's Twitter jab. LeBron simply has better things to focus his time on as a social justice advocate who's coming off of an NBA championship win.

It's also worth noting that Paul has a recent history of staging fake celebrity beefs to hype up potential boxing matches. Earlier this year, Paul got into a spat with boxer Ryan Garcia on Twitter which ended in the pro boxer confronting Paul at his house (and dropping a contract on his doorstep). The altercation was caught on video. However, sources close to Paul and Garcia have since come out and verified that the entire incident was staged. Needless to say, Jake Paul and Logan Paul certainly know how to play the game and pull pay per views. Fans can only wait to see which celebrity fish Jake Paul aims to hook next.

Next: Logan Paul Will Take On Floyd Mayweather In Special Exhibition Fight

Sources: Jake Paul/Twitter