Vaughn Grissom Is Heating Up Again — And Nobody's Paying Attention

Vaughn Grissom just posted a .468 wOBA over the last seven days while cutting his strikeout rate in half. He's rostered in 3% of leagues. No major fantasy outlet is talking about him. The data is clear: this is a real hot stretch backed by improving plate discipline, and you need him on your watchlist immediately.

The Signal: What Changed This Week

Let's look at the rolling windows, because the trajectory tells the story:

  • 7-day wOBA: .468 — up from .338 over 30 days
  • 7-day K%: 8.3% — down from 18.2% over 30 days
  • 7-day BB%: 8.3% — up from 6.4% over 30 days
  • 7-day AVG: .350 with 2 HR across 24 PA

That strikeout rate is the headline. Grissom went from an 18.2% K rate over 30 days to just 8.3% in his last 24 plate appearances. He struck out once in his last five games. Once. That's not a fluke hot streak built on BABIP luck — that's a hitter who's making better swing decisions and putting the ball in play with authority.

Skills Check: Sustainable or Mirage?

Here's where some caution is warranted. Grissom's hard-hit rate over the last seven days sits at 43.1%, which is solid, and his exit velocity of 87.7 mph represents a modest uptick from his 30-day mark of 86.3 mph. The 14-day hard-hit rate of 28.5% is concerning as a broader sample, though the 30-day number of 33.2% suggests the recent surge may be getting him back to his baseline rather than exceeding it.

The power has been consistent throughout — 6 HR across 110 PA over the last 30 days is a legitimate pace. The question has always been whether Grissom could sustain enough contact quality and plate discipline to be a reliable fantasy contributor. The last week says yes. The last month says maybe.

WaiverScout Has Been Watching

We first flagged Grissom back on July 12 as a Watch when he was rostered in just 1% of leagues. We upgraded him to Add Now on July 31 at 6% ownership when the signals peaked. He cooled off, and we adjusted — downgrading to Deprioritize in mid-August when the production stalled. Just last week on September 16, he was still in our deprioritize tier. But the last seven days have forced a reclassification. Grissom is streaky, and this algorithm has tracked every swing of the pendulum.

The Opportunity

Grissom logged 24 PA over the last seven days, confirming he's getting consistent at-bats for the Angels. Multi-position eligibility at 1B, 2B, and 3B adds real roster flexibility — the kind of versatility that can unlock lineup construction advantages down the stretch. If you're looking at Sal Stewart or Royce Lewis at the hot corner, Grissom belongs in that same conversation when he's clicking.

At 3% rostered with no mainstream buzz, this is a player the industry hasn't caught up to yet. This signal may be ahead of every major publication's radar.

Verdict: Watch

The numbers back it up — but the history demands patience. Grissom has flashed this ceiling before this season and then retreated. The improved K rate and walk rate suggest something more sustainable this time, but the hard-hit data over 14 days keeps this in Watch territory rather than a full add. Monitor his next 20-30 PA closely. If the strikeout rate stays suppressed and the hard-hit numbers hold above 40%, this moves to an add quickly. Get him queued up on your waiver wire now so you're not scrambling when the breakout fully materializes.