Daily Waiver Report — Sunday, August 16, 2026

Trent Grisham is posting a .602 wOBA over the last seven days with a 98.9 mph average exit velocity, and he's still available in half of all leagues — that window is closing fast, with ownership surging 12% in the past week alone. If he's on your wire, he's the move this morning before lineups lock.

Today's Top Adds

Trent Grisham (OF, NYY) — Add Now

The signal stack here is as strong as it gets: a .602 wOBA over the past seven days against a .287 mark over the previous 30, backed by a 75.0% hard-hit rate and 98.9 mph exit velocity. Grisham has slashed .417 with 4 home runs across 25 plate appearances this week while cutting his strikeout rate from 16.7% to 12.0%. At 50% ownership and climbing rapidly, this isn't a speculative add — it's a priority claim. The underlying quality metrics validate the batting average, and the consistent playing time removes the platoon risk that has haunted him in the past.

Xander Bogaerts (SS, SD) — Add Now

The batting average doesn't pop at .188, but everything underneath it screams incoming correction. Bogaerts posted a .347 wOBA over the past seven days — up from .290 over 30 days — with 2 home runs, a 97.7 mph exit velocity, and a 66.7% hard-hit rate. He's walking at a 15.0% clip and striking out at just 10.0%, down from 13.6%. This is elite plate discipline paired with elite contact quality, and the BABIP will catch up. At just 30% ownership with no movement, the market hasn't noticed yet. Grab him before it does.

Watch List

Zack Gelof (2B/3B/OF, ATH)

A .432 wOBA with 2 home runs in 21 plate appearances, and ownership has spiked 12% to 43%. The multi-position eligibility adds roster flexibility. Monitor for sustained hard-hit data to confirm this isn't a small-sample mirage.

Charles McAdoo (1B/3B, TOR)

Unowned in virtually every league, McAdoo quietly posted a .398 wOBA with a .312 average and a homer across 20 plate appearances. This is the ground floor — if he keeps hitting, he'll be a top add within a week.

Miguel Amaya (C, CHC)

A 100.0% hard-hit rate and 99.3 mph exit velocity over the past week are eye-popping, even in a small sample. His wOBA jumped from .308 to .342, and his strikeout rate dropped from 33.3% to 27.3%. Catcher is thin enough that Amaya at 1% ownership deserves a roster stash in two-catcher formats immediately.

Brock Burke (RP, CIN)

A 57.1% strikeout rate over the past seven days with a -1.22 FIP. That K rate is up from an already-strong 34.5% over 30 days. The 2.43 ERA and 19.46 K/9 are absurd — regression is coming, but the stuff is clearly dominant right now. Watch for role clarity.

Henry Bolte (OF, ATH)

The exit velocity is the headline: 104.1 mph over the past week with a 66.7% hard-hit rate. Bolte hit .333 with a .383 wOBA in 25 plate appearances while cutting his strikeout rate from 28.0% to 24.0%. At 4% ownership, he's a free pickup in deeper leagues.

Tristan Peters (OF, CWS)

A .466 wOBA over the past seven days, way up from .237 over 30 days. Peters hit .400 with a homer — a massive week-over-week spike. The 30-day floor is concerning, so wait for a second confirming week before adding.

Jeremiah Estrada (RP, SD)

A 45.5% strikeout rate with a -0.23 FIP this week. The K rate is ticking up from an already-elite 41.9% over 30 days. Estrada is the kind of reliever who can single-handedly anchor your ratios in weekly formats. At 7% owned, he's undervalued.

Joe Mack (C, MIA)

Mack's wOBA surged from .313 to .446 over the past week, driven by a strikeout rate that cratered from 29.6% to 17.6% and a walk rate that tripled from 5.6% to 17.6%. He hit .357 with a homer. The 88.6 mph exit velocity is the one concern — the power may not be sustainable. But the plate discipline transformation is worth watching closely at the catcher position.

Stream of the Day

No streaming-specific signals surfaced today from the pitching matchup data. With the watch list loaded with relief arms, your best short-term play is Brock Burke if you need strikeouts and ratio help — a 19.46 K/9 over the past week in a relief role can swing a weekly matchup. He's available in 98% of leagues and the FIP of -1.22 suggests the results are backed by real dominance, not sequencing luck. Plug him in if you're chasing Ks this week.

Ownership Movers

  • Trent Grisham (50%, +12% 7d) — Fully justified. A .602 wOBA with a 75.0% hard-hit rate isn't a fluke at 25 plate appearances. The market is catching up, and the remaining 50% of leagues should follow.
  • Zack Gelof (43%, +12% 7d) — Also justified, though slightly more cautious. The .432 wOBA and multi-positional eligibility are driving the adds, but we'd like to see hard-hit and exit velocity data to fully endorse.
  • Charles McAdoo (0%) — The fact that this number hasn't moved yet is the opportunity. A .398 wOBA in 20 plate appearances with dual corner eligibility should not be sitting at 0%.
  • Miguel Amaya (1%) — Same story. A 100.0% hard-hit rate and 99.3 mph exit velocity at the catcher position. The scarcity premium alone should push this higher.
  • Brock Burke (2%) — A reliever with a 57.1% K rate doesn't stay at 2% for long. Whether the role supports fantasy value is the only remaining question.

Quick Hits

  • Henry Bolte's 104.1 mph exit velocity is the highest among all players in today's signal report — higher than Grisham (98.9), Bogaerts (97.7), and Amaya (99.3). At 4% ownership, he's the most underpriced barrel machine on the wire.
  • Joe Mack's walk rate jumped from 5.6% to 17.6% in a single week. That kind of plate discipline leap at the catcher position is extremely rare — if it holds for even one more week, he becomes a must-add.
  • Brock Burke's -1.22 FIP is the lowest (best) among all pitchers flagged today, edging Jeremiah Estrada's -0.23. Both are relief arms sitting below 10% ownership with elite strikeout upside.
  • Tristan Peters had the largest wOBA jump on the board: from .237 over 30 days to .466 over 7 days, a .229-point swing. That volatility is a double-edged sword — the breakout is real, but so is the floor.
  • Xander Bogaerts posted a 10.0% strikeout rate this past week — the lowest among all hitters flagged today. Combined with a 15.0% walk rate, that's an elite K/BB profile that points to a batting average surge incoming.