Isaiah Hartenstein or Mark Williams? Week 1
Who to start in fantasy basketball in Week 1 (Oct 19-25), Cs ranked 24th and 26th at the position, compared on 2025-26 and 2026-27 per-game production.
Updated Oct 22, 1:54 PM ET. Rechecked every 30 minutes.
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- FP/G
- 27.1
- 9-cat
- #58
- Last 10 FP
- 21.8
Out (Shoulder)
2 games in Week 1
Week 1 pick in 9-cat leagues.
The Week 1 call
Mark Williams is listed Out (Shoulder) on Sleeper, so his projection counts no games while that stands.
Points leagues, Week 1 (Oct 19-25): start Isaiah Hartenstein. Isaiah Hartenstein has 2 games counted to 0 for Mark Williams, for 57.2 projected fantasy points against 0.0.
9-cat leagues: Mark Williams instead, 0.0 category value for the week to -2.3, because his category mix is worth more there.
Isaiah Hartenstein's minutes are down: 17.4 a game over his last 1 game of 2026-27, against 23.7 on the board.
Mark Williams played 23.3 minutes a game over his last 5 games of 2025-26, in line with his 23.6 on the board.
This is the call for one lineup slot across the week, the way weekly-lock leagues play it. In a daily-lineup league, start whichever of the two plays that night, and both when they fit.
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Week 1 (Oct 19-25), side by side
| This week | Isaiah Hartenstein | Mark Williams |
|---|---|---|
| Games, Week 1 | 3 | 2 |
| Games counted (left this week) | 2 | 0 |
| Back-to-backs | 0 | 0 |
| Games, Week 2 | 3 | 2 |
| Minutes, last games | 17.4 (last 1) | 23.3 (last 5) |
| Minutes, board | 23.7 | 23.6 |
| Shots per 36, last games | 8.3 | 9.9 |
| Injury | None listed | Out (Shoulder) |
| Projected fantasy points | 57.2 | 0.0 |
| Projected 9-cat value | -2.3 | 0.0 |
Schedule: Isaiah Hartenstein Tue @SAS, Thu DEN, Sun LAC. Mark Williams Wed @POR, Sat GSW.
Projected totals for the games counted
| Stat | Isaiah Hartenstein | Mark Williams |
|---|---|---|
| Points | 17.7 | 0.0 |
| Rebounds | 18.0 | 0.0 |
| Assists | 7.0 | 0.0 |
| Steals | 2.0 | 0.0 |
| Blocks | 1.6 | 0.0 |
| Threes | 0.0 | 0.0 |
| Turnovers | 3.5 | 0.0 |
Each projection is the board's per-game line times the games counted; a player listed Out counts none. 9-cat value is the per-game category score (z-scores against the top 156) times games. Minutes and shots per 36 come from the last 5 games of 2026-27. Schedule from the NBA's published slate via ESPN.
The season-long call
Points leagues: Isaiah Hartenstein, 28.6 fantasy points per game to 27.1.
9-cat leagues: Mark Williams instead, 58th overall against 93rd, because the categories reward a different mix.
Per game, side by side
| Stat | Isaiah Hartenstein | Mark Williams |
|---|---|---|
| Fantasy points per game | 28.6 | 27.1 |
| Minutes | 23.7 | 23.6 |
| PointsPTS | 8.9 | 11.7 |
| ReboundsREB | 9.0 | 8.0 |
| AssistsAST | 3.5 | 1.0 |
| StealsSTL | 1.0 | 0.9 |
| BlocksBLK | 0.8 | 0.9 |
| Threes3PM | 0.0 | 0.0 |
| Field goal %FG% | 61.7% | 64.4% |
| Free throw %FT% | 61.0% | 77.1% |
| TurnoversTO | 1.8 | 1.1 |
Bold is the better number. Per-game lines blend last season with this one, the same numbers the rankings use.
Other close calls
Week 1 streamers · NBA waiver wire · Games per team this week
Is Isaiah Hartenstein playing tonight? · Is Mark Williams playing tonight?
Your next move
Common questions
Should I start Isaiah Hartenstein or Mark Williams in Week 1?
Mark Williams is listed Out (Shoulder) on Sleeper, so his projection counts no games while that stands. Points leagues, Week 1 (Oct 19-25): start Isaiah Hartenstein. Isaiah Hartenstein has 2 games counted to 0 for Mark Williams, for 57.2 projected fantasy points against 0.0. 9-cat leagues: Mark Williams instead, 0.0 category value for the week to -2.3, because his category mix is worth more there. Isaiah Hartenstein's minutes are down: 17.4 a game over his last 1 game of 2026-27, against 23.7 on the board. Mark Williams played 23.3 minutes a game over his last 5 games of 2025-26, in line with his 23.6 on the board.
Who is better for the season, Isaiah Hartenstein or Mark Williams?
Points leagues: Isaiah Hartenstein, 28.6 fantasy points per game to 27.1. 9-cat leagues: Mark Williams instead, 58th overall against 93rd, because the categories reward a different mix.
Who wins more categories, Isaiah Hartenstein or Mark Williams?
Isaiah Hartenstein is ahead in 3 (rebounds, assists, steals); Mark Williams in 5 (points, blocks, field goal percentage, free throw percentage, turnovers), per game.
By the Parlae deskBoard updated Oct 22, 2026 at 1:54 PM ETHow this is builtReport a wrong number