Start Sione Vaki or Isaiah Davis? Week 9

Our Week 9 call

Start Sione Vaki over Isaiah Davis in Week 9.

Market-based projections have Sione Vaki at 3.6 points and Isaiah Davis at 2.8, a gap of 0.8. That is inside the noise of a single catch, so treat it as close to a coin flip. Sione Vaki's number is scaled up from a partial market: not every stat the position needs is posted yet, so the rest is estimated from what is. No player market is posted for Isaiah Davis this week yet, so his 2.8 is the average of his market-based projections in Weeks 6 and 8 (1.9 and 3.7); the call is rebuilt when his market posts.

What the market projects

Player markets imply 3.7 fantasy points for Sione Vaki, with 90 percent of the markets a RB needs posted.

The market-based projection for Sione Vaki is 16 rushing yards and 0.2 touchdowns (10 and 12 market sources).

No Week 9 player market is posted for Isaiah Davis yet. His market-based projections were 1.9 and 3.7 points in Weeks 6 and 8, an average of 2.8, which stands in until his Week 9 market posts.

That puts Sione Vaki 0.8 points ahead of Isaiah Davis on these projections.

Week 9 matchups

Sione Vaki and DET visit MIA on Sunday at 1:00 PM ET.

MIA allowed 25.0 fantasy points a game to RBs this season over 7 games, the 8th most in the league.

Running backs ran for 106 yards and 0.4 touchdowns a game against MIA and caught passes for 41 more yards.

Isaiah Davis and NYJ visit KC on Sunday at 1:00 PM ET.

KC allowed 19.8 fantasy points a game to RBs this season over 7 games, the 10th fewest in the league.

Running backs ran for 69 yards and 0.7 touchdowns a game against KC and caught passes for 42 more yards.

By points allowed to the position, Sione Vaki has the softer matchup.

Injury status

Sione Vaki is not on the injury report.

Isaiah Davis is not on the injury report.

Usage before Week 9

Through Week 8, Sione Vaki played 24 percent of DET snaps, took 14 percent of the carries, drew 2 percent of the targets and had 1 percent of the red zone chances.

Sione Vaki, Week 4 against CAR: 12 of 71 snaps, 0 carries for 0 yards, 2 targets and 1 catch for 17 yards.

Sione Vaki, Week 5 against ARI: 23 of 66 snaps, 6 carries for 11 yards, 0 targets and 0 catches for 0 yards.

Sione Vaki, Week 7 against GB: 9 of 68 snaps, 1 carry for 5 yards, 0 targets and 0 catches for 0 yards.

Sione Vaki, Week 8 against MIN: 20 of 72 snaps, 11 carries for 65 yards, 1 target and 1 catch for 5 yards.

Through Week 8, Isaiah Davis played 15 percent of NYJ snaps, took 13 percent of the carries, drew 5 percent of the targets and had 15 percent of the red zone chances.

Isaiah Davis, Week 5 against CLE: 10 of 70 snaps, 2 carries for 8 yards, 2 targets and 1 catch for 9 yards.

Isaiah Davis, Week 6 against NE: 8 of 62 snaps, 7 carries for 16 yards, 1 target and 1 catch for 10 yards.

Isaiah Davis, Week 7 against MIA: 13 of 59 snaps, 1 carry for 5 yards, 3 targets and 3 catches for 49 yards.

Isaiah Davis, Week 8 against LV: 11 of 64 snaps, 5 carries for 15 yards, 0 targets and 0 catches for 0 yards.

Their 2025 seasons

In 2025, Sione Vaki played 11 games for DET and scored 0.4 PPR points, 0.0 a game, finishing RB143.

He ran 1 time for 4 yards and 0 touchdowns, and caught 0 of 0 targets for 0 yards.

He was on the field for 0 percent of the offense's snaps in the games he played.

In 2025, Isaiah Davis played 16 games for NYJ and scored 71.2 PPR points, 4.5 a game, finishing RB59.

He ran 43 times for 236 yards and 1 touchdown, and caught 21 of 28 targets for 186 yards.

He was on the field for 29 percent of the offense's snaps in the games he played.

Their other Week 9 calls

• Start Sione Vaki over CJ Donaldson.
• Start Corey Kiner over Sione Vaki.
• Start George Holani over Sione Vaki.
• Start CJ Donaldson over Isaiah Davis.
• Start Corey Kiner over Isaiah Davis.
• Start George Holani over Isaiah Davis.