The Spurs' three-guard puzzle is the real De'Aaron Fox trade decider

There's a real reason the Spurs should end their partnership with De'Aaron Fox early. People who want Swipa gone have pretty much regurgitated the same two talking points. Either Dylan Harper is just better and should take the reins, or Fox's shortcomings in the NBA Finals are grounds for removal. They're wrong on both counts. We should focus more on the three-guard lineup.

The reality is that Dylan Harper and Stephon Castle are both here. Right now. Their talent suggests they do deserve as much time on the floor as possible. But Fox is still a very skilled player in his own right and also needs to be in the action. The best way for Mitch Johnson to ensure he's getting the most out of them all is to play them together, but that hasn't worked well thus far.

The Spurs need their best players on the floor

We didn't see the three-headed guard lineup much last season, but when we did, things didn't exactly go smoothly. The trio posted a -26.9 net rating. That's a problem that needs to be fixed, but it's also one that could somewhat be explained by Fox's lack of an offseason last summer. With more time to work on chemistry, those three need to figure out what it looks like to coexist on the floor simultaneously.

Manu Ginobili came off the bench for much of his career, but he still played close to 30 minutes a night. In his Sixth Man of the Year and All-NBA seasons, he logged 30-31 MPG because he was too good to sit, but he was also a great fit on the floor with Tim Duncan and Tony Parker.

That's the model we need for Harper. He can come off the bench. That's fine. But he still needs to approach 30 minutes, and the only way that happens is if he's regularly sharing the court with Fox and Castle, not just replacing one of them.

Fox, Harper, and Castle have to make it work

When Indiana made a run to the NBA Finals in 2025, their three-guard lineups worked well because guys could catch-and-shoot. That's the key to unlocking this unit. With Victor Wembanyama on the floor, they can make the defense work just fine. It's the offense that can get bogged down. If the shooting numbers aren't there, the opponent will just sag into the paint, clogging the lane.

If the fit can't be made, it's not because Harper needs to be rushed or because of Fox's struggles in the postseason. It's this, and it's a legitimate basketball reason to consider moving the former Kings guard. Everything else is manufactured nonsense because, generally speaking, it's a good thing to have a bunch of good players on your team.

The title window is open now. Once that happens, there's no time to waste trying to force clunky lineups. If they can't coexist on the floor together this season, San Antonio would be well within their rights to cut the marriage short and move on.

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