Spurs' Three-Guard Puzzle: Fox, Harper and Castle Scramble Fantasy Value
San Antonio went plus-10 in 25 possessions with its guard trio, but Fox's 34.7 fantasy PPG floor is still shaky heading into Opening Night.
Crowded three-guard look caps his ceiling; cash in before usage dips.
- Fox: 18.6 pts, 6.2 ast, 34.7 FPTS/G in 72 games (2025-26)
- Spurs +10 in 25 poss with the trio vs Suns
- Trio got crushed in 54 reg + 83 playoff poss last year
- Fox ranked #54 overall, #25 at guard in our model
- Harper expected to open on the bench, per report
With under a week to Opening Night, the Spurs are still wrestling with the question that defined their offseason: can De'Aaron Fox, Dylan Harper and Stephon Castle actually share a backcourt? San Antonio finally got a real look Wednesday against the Suns and the trio went plus-10 across 25 possessions in a win. Encouraging — but it's a tiny sample against the ugly one from last year, when the three logged just 54 regular-season and 83 postseason possessions together and got torched.
The math is the problem. Fox (18.6 points, 6.2 assists, 34.7 fantasy points per game across 72 games last season, 2025-26) plus Harper plus Castle is three ball-dominant creators and zero reliable floor-spacers. There are diminishing returns on ball-handling and none on shooting — which is why the Spurs took off last year once Julian Champagnie slid into the lineup. Two handlers, two shooters, one unicorn got them to the Finals.
Why the Trio Is Hard to Avoid
Even so, San Antonio may have little choice but to experiment. Harper and Castle are long-term pillars, and Fox is sitting on a fresh four-year max that could make him close to untradeable. That contract math forces the issue: the Spurs have to at least find out if the three guards are viable. Harper is widely expected to open the season off the bench, but he's too good to keep there forever.
The early read is that San Antonio toys with the trio in bursts rather than committing. But remember, this is a team that made a major in-season change last year. If Harper keeps producing, don't be shocked if the lineup gets shaken up by spring — which is precisely the kind of uncertainty that tanks a role player's fantasy floor.
The Fantasy Fallout
Fox is the name to watch here, and not in a good way. He sits at #54 overall and #25 among guards in our rankings — already a shaky GuardSplit... scratch that, a shaky HoopSplit asset — and a crowded three-guard look only compresses his touches and his usage. A guard who needs the ball to score efficiently is a bad fit in a backcourt built around other primary creators.
The move: sell high on Fox now, while the preseason plus-minus and his draft-day name recognition still carry trade weight. If you're rostering Harper or Castle, treat them as upside stashes rather than locked-in starters until San Antonio commits. And if you're sweating the fifth-starter chaos elsewhere, just know the Spurs' answer may not arrive until the games actually count.
