The Los Angeles Lakers beat the New York Knicks on Saturday, then made one of the most shocking deals in NBA history.

The team is sending Anthony Davis, Max Christie and a first-round pick to the Dallas Mavericks in exchange for Luka Dončić, Maxi Kleber and Markieff Morris in a three team deal that also includes the Utah Jazz, according to ESPN’s Shams Charania.

News of the trade was so jarring that many speculated Charania’s account could have been hacked, but reporters from both the Los Angeles Times and the Dallas Morning News quickly confirmed it. There was no prior indication at all that either team was looking to move its All-Star forward.

Marc Stein reports that Dončić did not request a trade and it was in fact the Mavericks who approached the Lakers about a league-altering deal.

The deal swaps out Davis for Luka Dončić as LeBron James’ co-star, though it may be more accurate to say Dončić will be the star long-term. Dončić is currently out with a calf injury, but has made five straight All-NBA first teams at 25 years old. The Lakers were facing a potential slide over the next few years as both James and Davis aged, but this changes everything.

As for the Mavericks, they are moving on from a player their fans never expected to leave, and they don’t seem to be receiving much beyond Davis, a player who can impact a game on both ends of the floor but has rarely succeeded as a team’s offensive focal point.

Mavericks general manager defended the move with a tried-and-true line, via ESPN’s Tim McMahon:

Other rationalizations for the deal emerged soon after. McMahon reported Dallas had concerns about Dončić’s conditioning, which has been his main issue as an NBA player, and his approaching negotiations for another supermax deal. Dončić has two years left on his current deal after this season.

It’s hard to think of a trade with anything close to a precedent to this. Superstars have been traded for each other, but never at midseason and rarely with no request for either side.