Tobias Harris’ calf injury gives the San Antonio Spurs a strong reason to keep Julian Champagnie in the starting frontcourt while their new forward recovers. Champagnie already has experience in that assignment. Harris’ absence delays the chance to evaluate how a bigger, more versatile scorer changes the group around Victor Wembanyama.

Harris will miss the entire preseason and is questionable for the October 20 opener against Oklahoma City. The Spurs announced October 4 that he strained his left calf during training camp and will be reevaluated after their five preseason games. They have not announced a return date. Matt Guzman’s injury report

When could Harris return?

San Antonio’s preseason ends October 16 against Sacramento. That leaves only a short interval before opening night, and reevaluation does not guarantee clearance to play. Coach Mitch Johnson said the team would proceed slowly: “We won’t rush him at all.” Tom Orsborn’s reporting for the San Antonio Express-News

The Spurs have not established whether Harris will miss any regular-season games or how long that absence might last.

Why Champagnie is the natural starting option

Champagnie started 68 of his 82 regular-season appearances in 2025-26, averaging 11.1 points and making 38.1% of his 3-pointers. His 2.4 made threes per game supplied useful perimeter scoring without requiring the offense to run through him. That gives the Spurs a reason to retain him as a starter even apart from Harris’ injury. RotoWire’s season statistics and role assessment

Champagnie’s shooting helps create room for Wembanyama and the guards to attack. A defender who stays close to him has less freedom to crowd a drive or help inside.

Harrison Barnes also remains available as an experienced forward option. Champagnie replaced Barnes in the starting lineup last season, and both returned this summer. Johnson has credited that continuity with allowing the team to build on familiar combinations in camp. Jeff McDonald’s reporting on the returning forwards

San Antonio can therefore preserve an established frontcourt while Harris is out.

What the Spurs lose without Harris

Harris offers another way to use the forward position. McDonald’s reporting describes a player who can operate at either forward spot, post up smaller defenders, rebound and handle different defensive matchups. Those skills explain why San Antonio wanted him alongside Wembanyama. The case for adding Harris

In a potential lineup with Harris, a defensive switch that leaves a smaller opponent guarding him could become a scoring opportunity. Champagnie’s clearest established contribution is to keep defenders occupied away from the ball. He can fill the available minutes, but his shooting does not reproduce everything Harris might add.

The preseason will allow San Antonio to evaluate its available combinations, but Harris’ absence prevents a direct game comparison. If Champagnie starts, last season’s production supports that choice. It will not, by itself, settle how Johnson should divide the forward minutes once Harris is healthy.