Amir Khan threw shade at both Manny Pacquiao and Jeff Horn on Twitter following the latter's successful title defence over Gary Corcoran.
Horn controversially defeated Pacquaio in a 117-111, 115-113 and 115-113 unanimous decision for the WBO welterweight title back in July. He would then successfully defend his title for the first time after defeating Corcoran via an 11th-round TKO on Wednesday (13 December).
However, Khan, who was watching the event live in Brisbane, was not impressed with the Australian's performance and proceeded to also take a swipe at Pacquiao.
"Watching the Horn v Corcoran fight live, Now I know why #MannyPacquiao picked horn to fight & not me,,,, & he still lost," Khan tweeted.
The two old sparring partners were due to meet in April of this year after announcing in February on social media that they had agreed on a super fight between each other.
Before the agreement, Pacquiao had even notably asked his fans to choose his next opponent via a Twitter poll with Khan being the overwhelming pick with 48% of the votes. Horn, meanwhile, was bottom, with 7% of the votes.
In the end, "Pacman" ended up facing Horn and would lose his title. A rematch was set for November but Pacquiao had to withdraw due to his senatorial commitments in the Philippines.
The Filipino boxing star would, however, reply to Khan's mocking tweet a couple of hours later with a GIF of Michael Jordan laughing.
Meanwhile, Horn could now be set for a showdown with unified light welterweight champion Terence Crawford, who is considered by many as the best pound-for-pound boxer in the world right now.
Top Rank promoter Bob Arum recently claimed Pacquiao could fight the winner of that bout provided he wins his next fight, with rumours stating that it could be UFC lightweight champion Conor McGregor.
Despite Pacquiao's Instagram post and claims that talks have been opened, UFC president Dana White, however, said he would sue Pacquiao if that was the truth because the Irishman is still under contract.