Yainer Diaz is the clear pickup of the morning — the Astros catcher is sporting a .541 wOBA over the last seven days against a .344 mark over 30, and he's slashed his strikeout rate from 17.2% to 6.7% while hitting .333 with 3 homers across five games. At 41% rostered, the window is closing but hasn't shut. If he's sitting on your wire, that changes today.

Today's Top Adds

Yainer Diaz (C, HOU) — Add Now

Three signals fired simultaneously: a rising wOBA (.541 vs .344 over 30 days), a plummeting strikeout rate (6.7% over 7 days, down from 17.2%), and raw production to back it up — .333 AVG and 3 HR in five games. The catcher position is a wasteland in most formats, and Diaz is producing at an elite clip with the underlying approach to sustain it. At 41% ownership he's available in more than half of leagues, but that number is going to spike this weekend. Prioritize this move over everything else on today's report. If you need help deciding who to drop, consider what you're currently getting from catchers like Hunter Goodman, Ryan Jeffers, or Gabriel Moreno.

Watch List

Jasson Domínguez (OF, NYY) — Watch

The most complete offensive profile on the watch list today. Domínguez posted a .425 wOBA (up from .311 over 30 days), a .346 AVG with 2 HR, and cut his strikeout rate from 21.7% to 17.9% — all over a real 28-plate-appearance sample. His walk rate ticked up to 7.1% from 5.4%, and he's logged 94.7 mph average exit velocity with 45.9% hard-hit quality. At just 12% rostered, he's the watch list player closest to becoming an "Add Now." One more strong week and the ownership dam breaks.

Nolan Arenado (3B, AZ) — Watch

The batting average is an uninspiring .238, but everything underneath is moving the right direction. Arenado's wOBA jumped to .363 from .263 over 30 days, his walk rate surged to 12.5% (from 7.1%), and the quality of contact is elite — 100.0% hard-hit quality with a 101.1 mph exit velocity. Two homers in 24 plate appearances from a 19%-rostered player who's clearly barreling everything he touches. The results are coming; the average will follow the exit velo. Keep an eye on this over the weekend, especially in leagues that need corner infield help. Junior Caminero, Josh Jung, and Austin Riley are other 3B options to weigh, but Arenado's batted-ball data is screaming.

Luisangel Acuña (2B, SS, OF, CWS) — Watch

Multi-position eligibility and a .440 wOBA over the past week, up from .348 over 30 days. The strikeout rate has been halved — 12.5% vs 22.6% — and he's hitting .500 in the short window. The 91.3 mph exit velocity and 50.0% hard-hit quality are modest, so this is an approach-driven surge more than a power breakout. Still just 1% rostered. An early signal worth monitoring, particularly in deeper leagues where SS/OF flexibility is gold.

Colt Keith (1B, 2B, 3B, DET) — Watch

The average sits at .214, but Keith's underlying data tells a different story: .391 wOBA, 2 HR, 100.0% hard-hit quality, and 98.3 mph exit velocity. His walk rate has tripled from 4.5% to 12.5% over the last week. A classic case of a hitter who's squaring the ball up and getting unlucky on BABIP. At 8% rostered with three-position eligibility, he's a stash in 12-team leagues. Sal Stewart is another Tigers-adjacent option at the hot corner.

Austin Hedges (C, CLE) — Watch

A .552 wOBA over the last seven days, up from .396 over 30. Hedges hit .500 with a homer in the sample. This is an early signal at 0% rostered, and Hedges has never been a fantasy-relevant bat — treat this as a curiosity unless the quality-of-contact data catches up in the next few days.

Joey Bart (C, ATL) — Watch

Bart's wOBA surged to .413 from .234 over 30 days, with a homer and an improved walk rate (7.7% vs 3.8%). At 0% rostered, he's a deep-league flier at a barren position. The .200 average keeps him squarely on the watch list for now.

Steven Okert (RP, HOU) — Watch

A 0.00 ERA and 14.59 K/9 over the last week, with a 50.0% strikeout rate (up from 35.8%) and a ridiculous -0.14 FIP. Early signal on a 4%-rostered reliever, but those are elite ratios if he's earning higher-leverage work in Houston.

Garrett Cleavinger (RP, TB) — Watch

Similar story: 0.00 ERA, 16.67 K/9, 45.5% strikeout rate, and a -0.60 FIP. At 9% rostered, Cleavinger is slightly more established. The Rays have a history of unlocking relievers. Worth a speculative add in leagues that reward ratios and K volume.

Ryan Zeferjahn (RP, LAA) — Watch

A 0.98 FIP and 38.5% strikeout rate with a 13.64 K/9 over the past week, all on a clean 0.00 ERA. Only 2% rostered. Another reliever flashing nasty stuff in a small window — monitor for role clarity with the Angels.

Stream of the Day

No streaming-specific signals fired today. The algorithm didn't flag any spot starters or matchup-driven plays worth chasing. If you're desperate for pitching help this weekend, Garrett Cleavinger and his 16.67 K/9 could provide a ratio boost in weekly lineups, but that's a reliever play, not a true stream. Check back tomorrow for updated pitching signals.

Ownership Movers

Flat across the board today. None of the 10 players flagged saw meaningful ownership movement over the past seven days — Yainer Diaz held at 41%, Nolan Arenado at 19%, Colt Keith at 8%, and Jasson Domínguez actually ticked down 1% to 12%. That's the opportunity: the data is moving before the crowd. Every player on this list is performing at a level their ownership doesn't reflect. This is the gap you exploit. By Monday morning, expect Diaz and Domínguez in particular to see significant add activity across platforms.

Quick Hits

  • Exit velocity king of the day: Nolan Arenado at 101.1 mph average exit velocity with 100.0% hard-hit quality. That's not a fluke — that's a hitter locked in on his pitch. The .238 average is a mirage.
  • Strikeout rate collapse alert: Yainer Diaz went from a 17.2% K-rate over 30 days to 6.7% in the last week. When a hitter's contact rate improves that dramatically alongside a .541 wOBA, you're looking at a real mechanical or approach adjustment, not noise.
  • Reliever arms race: Three relievers — Steven Okert, Garrett Cleavinger, and Ryan Zeferjahn — all posted 0.00 ERAs with K/9 rates above 13.50 this week. Combined ownership: 15%. In leagues where relievers carry value, at least one of these arms deserves a speculative roster spot. Cleavinger's 16.67 K/9 is the standout.
  • Positional scarcity play: Three catchers appeared in today's signals (Yainer Diaz, Austin Hedges, Joey Bart). The position is so thin that even Bart's .413 wOBA week is worth flagging in two-catcher formats. Diaz is the priority; the other two are depth plays.
  • Multi-eligibility watch: Luisangel Acuña (2B/SS/OF) and Colt Keith (1B/2B/3B) both carry premium positional flexibility. In formats where lineup construction matters, these are the kind of stashes that win weeks in August and September.