Michael Massey is hitting .429 with a .504 wOBA and three homers over the last seven days at just 5% ownership — that's the single biggest market inefficiency on today's board. But he's not the only signal worth acting on this Monday morning. We've got 10 rising trends across the wire, two players worth grabbing right now, and a handful of names that could become must-adds by the weekend.

Today's Top Adds

Brooks Lee (2B/3B/SS, MIN) — Add Now

Lee's wOBA has jumped to .291 over the last seven days, up from .259 over the trailing 30 — and the batted ball data explains why. He's posting a 96.8 mph exit velocity with a 65.0% hard-hit rate across 29 plate appearances. The .185 batting average looks ugly on the surface, but three homers in a week and that kind of exit velocity profile mean the results are coming. At 37% ownership and climbing seven points in a week, the window to add him for free is closing fast in competitive leagues. The contact quality is real; the BABIP will catch up.

Sam Antonacci (2B/3B/OF, CWS) — Add Now

Antonacci's plate discipline transformation is the story here. His strikeout rate has cratered from 17.6% over 30 days to just 3.6% in the last week, while his walk rate has ticked up from 5.6% to 7.1%. That's a hitter who's seeing the ball differently. The .354 wOBA over the past seven days is a tick up from his already-strong .338 over 30, and he's getting consistent run with 28 plate appearances in the last week. At 26% ownership, he's still widely available in most formats. The positional flexibility across 2B, 3B, and OF makes him an ideal bench piece even if you're not starting him today.

Watch List

Gleyber Torres (2B, DET)

Torres is demolishing the ball — 99.4 mph exit velocity, 87.5% hard-hit rate, and a .483 wOBA over the last week. He's slashing .412 with a homer. At 54% ownership he's already rostered in deeper leagues, but if he's sitting on your wire, the underlying quality of contact here is elite. This is an early signal over five games, so monitor for sustainability, but the exit velocity numbers are hard to ignore.

Willi Castro (1B/2B/3B/SS/OF, COL)

The .176 average is deceiving — Castro's drawn walks in 20.8% of his plate appearances this week (up from 9.9% over 30 days), dropped his strikeout rate from 23.1% to 16.7%, and is carrying a .375 wOBA with a homer. The discipline overhaul plus Colorado's home environment makes him intriguing. He's only 14% owned.

Enyel De Los Santos (RP, HOU)

A 0.00 ERA with a 41.7% strikeout rate and a 0.40 FIP over the last week. De Los Santos is punching guys out at a 12.16 K/9 clip. At 3% ownership, he's essentially unowned everywhere. The early signal tag applies — this is five appearances — but the swing-and-miss is legit and Houston's bullpen hierarchy could create opportunity.

Michael Massey (2B/OF, KC)

I led with Massey for a reason. A .504 wOBA, .429 average, three homers, and 50.0% hard-hit rate in 29 plate appearances — that's a five-game heater with serious volume. He's only 5% rostered. The walk rate has nudged up from 2.8% to 3.4%. If you need middle-infield or outfield help, this is a zero-risk add with massive upside if the power holds.

Miguel Amaya (C, CHC)

Catcher is a wasteland, which makes Amaya's week worth noting: .392 wOBA, .286 average, 66.7% hard-hit rate, and a 98.3 mph exit velocity. His walk rate has doubled from 5.6% to 11.1%. At 1% ownership, he's a speculative add in two-catcher leagues. Compare his underlying numbers to what's likely on your roster already.

Fernando Cruz (RP, NYY)

Cruz is pitching in the Yankees' bullpen with a 1.28 FIP and 25.0% strikeout rate over his last five outings. The 2.73 ERA is serviceable, and New York's high-leverage opportunities make him relevant for ratios and potential holds. Still just 11% owned.

Luke Weaver (RP, NYM)

Weaver's strikeout rate has jumped from 24.5% to 30.0% over the past week with a 0.00 ERA and 1.28 FIP. The 8.18 K/9 paired with zero runs allowed across five appearances is clean. At 8% ownership, he's a ratios stabilizer with swing-and-miss upside in the Mets' pen.

J.T. Realmuto (C, PHI)

The .091 batting average is horrific, but look underneath: .342 wOBA (up from .246 over 30 days), 75.0% hard-hit rate, 98.8 mph exit velocity, and a 25.0% walk rate. Realmuto is hitting the ball on the barrel and drawing walks — the results just haven't shown up in the hit column yet. At 17% ownership, he's a buy-low in leagues where he was dropped during his slump. The batted ball data strongly suggests a correction is coming.

Stream of the Day

No streaming-specific pitcher signals surfaced in today's scan — no two-start arms or matchup-based plays triggered our thresholds. If you're looking for short-term bullpen help, Enyel De Los Santos and his 0.40 FIP are the closest thing to a stream-worthy add today. His 41.7% K-rate means he can move your ratios in a single appearance. Check back tomorrow for starter-specific streaming options.

Ownership Movers

  • Brooks Lee (MIN): 37% (+7%) — The biggest mover of the week, and it's justified. The exit velocity and hard-hit data back the surge. He's still available in the majority of leagues, but not for long at this trajectory.
  • Gleyber Torres (DET): 54% (+5%) — Five points in a week is aggressive, but an 87.5% hard-hit rate and 99.4 mph exit velocity warrant the attention. The ownership move is data-supported.
  • Sam Antonacci (CWS): 26% (+2%) — Slow and steady climb. The 3.6% strikeout rate over the last week suggests managers haven't caught on to the discipline improvement yet. This should accelerate.
  • Willi Castro (COL): 14% (+2%) — Modest ownership bump, but the .375 wOBA and massive walk rate spike make this one of the more undervalued trends on today's board.
  • Enyel De Los Santos (HOU): 3% — Essentially untouched across the industry. A 41.7% K-rate and 0.40 FIP in any bullpen role should not be 3% rostered. The market hasn't reacted yet.

Quick Hits

  • Realmuto's bizarre week: J.T. Realmuto hit .091 but posted a .342 wOBA. How? A 25.0% walk rate and 98.8 mph exit velocity. He's barreling the ball and getting nothing to show for it in the hit column. This is textbook regression bait — in the good direction.
  • Castro's plate discipline makeover: Willi Castro walked in 20.8% of his plate appearances this week — more than double his 30-day rate of 9.9%. Combined with a K-rate drop from 23.1% to 16.7%, the approach change is dramatic and worth monitoring for durability.
  • Massey's power at 5%: Three homers in a week from a 5%-owned player is the kind of inefficiency that wins matchups. Michael Massey isn't a household name, but 29 plate appearances in seven days means Kansas City is running him out there every day.
  • The bullpen K-rate trio: De Los Santos (41.7%), Luke Weaver (30.0%), and Fernando Cruz (25.0%) are all sub-12% owned and all posting FIPs under 1.30. If you're punting saves and chasing ratios, all three are actionable today.
  • Amaya at catcher: A 98.3 mph exit velocity from a 1%-owned catcher. Miguel Amaya probably won't stay this productive, but in a position where the replacement-level bar is underground, his .392 wOBA merits a speculative roster spot in deeper formats.