Daily Waiver Report — Saturday, May 30, 2026

Casey Mize just posted a 42.9% strikeout rate over his last week with a 0.85 FIP and zero earned runs — and his ownership is actually dropping, down 5% to 57%. That disconnect between performance and roster trend is your best opportunity on the wire this morning. But he's not the only signal worth acting on before lineups lock.

Today's Top Adds

Gabriel Moreno (C, AZ) — 35% Rostered

Moreno's bat has been scorching: a .455 AVG and .419 wOBA over the past week, up from .303 over 30 days. Just as important, his strikeout rate has cratered from 20.8% to 7.7% in that window, meaning this isn't a fluky BABIP heater — he's putting the ball in play with authority. Catcher is a wasteland, and Moreno's ownership is trending up (+2% in 7 days). The window to grab him ahead of the crowd is closing. If Dillon Dingler or a lesser option is clogging your C slot, make the swap now.

Nolan Arenado (3B, AZ) — 34% Rostered

Arenado looks dialed in with a .441 wOBA and .400 AVG over the last seven days, backed by real contact quality: 95.9 mph exit velocity and a 66.7% hard-hit rate. His strikeout rate has been halved from 16.9% to 8.3%, suggesting a mechanical adjustment that's sticking. Ownership has cooled 3%, which is baffling given the underlying metrics. This is the buy-low window for a veteran hitter with a proven track record of sustaining hot stretches when the plate discipline tightens up like this.

Adolis García (OF, PHI) — 25% Rostered

García's batting average is ugly at .083 over the last week, but the process metrics tell a different story. His exit velocity sits at 97.2 mph with a 75.0% hard-hit rate — the ball is getting smoked, just at defenders. Meanwhile, his walk rate has surged to 25.0% (up from 10.0% over 30 days) and his K-rate has dropped from 31.0% to 25.0%. His wOBA has climbed from .216 to .250, and with this kind of hard contact, a batting average correction is coming. This is a classic "buy the process, not the results" add — especially at 25% ownership with the trend cooling off, meaning you can grab him without a bidding war.

Casey Mize (SP, DET) — 57% Rostered

A 0.00 ERA and 13.5 K/9 over the past week with a microscopic 0.85 FIP. His 42.9% strikeout rate nearly doubles his 30-day mark of 24.6%. Mize's ownership has dropped 5% despite elite recent production — managers who cut bait during a rough stretch are handing you a gift. The strikeout spike suggests a pitch-mix change or mechanical tweak that's generating more whiffs. In leagues where he's available, he's the highest-priority pitching add of the day.

Watch List

Jacob Young (OF, WSH) — 4% Rostered

Young's surface stats (.250 AVG, .289 wOBA) don't scream pickup, but the batted-ball data does: 97.1 mph exit velocity and a 66.7% hard-hit rate from a speedster who's also walking more (7.1% vs 5.6% over 30 days) and striking out less (14.3% vs 15.7%). If the average starts climbing to match the contact quality, he'll be a valuable source of runs and steals. Monitor for another week.

Enyel De Los Santos (RP, HOU) — 3% Rostered

A 45.5% strikeout rate over the last week with a 0.98 FIP and 13.64 K/9, all while allowing zero earned runs. The K-rate jump from 28.6% to 45.5% is dramatic. Still an early signal with limited innings, but if you're in a league that rewards holds or K-heavy ratios, keep him on your radar.

Ryan McMahon (3B, NYY) — 2% Rostered

McMahon has been demolishing the ball: .524 wOBA, .364 AVG, 2 HR, 99.8 mph exit velocity, and an 83.3% hard-hit rate over the past seven days. That's an enormous wOBA jump from .297 over 30 days. At 2% ownership with zero movement, you have time — but not much if this keeps up. He could be a top add within days.

Coby Mayo (1B/3B, BAL) — 2% Rostered

The signal here is screaming. Mayo's 7-day line: .481 wOBA, .333 AVG, 1 HR, 103.8 mph exit velocity, 87.5% hard-hit rate. His strikeout rate has plummeted from 30.1% to 10.0% while his walk rate has risen to 10.0%. That's a complete offensive profile transformation. The only reason he's on the Watch List instead of Top Adds is the early sample and 2% ownership — but this is the profile of a breakout waiting to happen. Grab him in deeper leagues immediately.

Mickey Gasper (C, BOS) — 2% Rostered

Gasper is slashing .357 with a .384 wOBA over the past week, with his walk rate tripling from 3.9% to 11.8% and an exit velocity of 96.0 mph. A catcher showing improved plate discipline and solid contact quality is worth a speculative add in two-catcher leagues.

Drew Anderson (RP, DET) — 2% Rostered

Anderson logged 5.7 IP over the past week with a 1.58 ERA and 12.63 K/9, pushing his 7-day strikeout rate to 38.1%. The workload suggests he's being trusted in higher-leverage situations. Worth monitoring alongside Mize as part of Detroit's pitching staff.

Stream of the Day

No streaming-specific signals were detected today — the algorithm didn't flag any spot starters or matchup-based plays. If you need a stream, Mize is the closest thing: his ownership suggests availability in many leagues, and his recent dominance (0.00 ERA, 13.5 K/9, 0.85 FIP) makes him a high-floor option if he has a start coming up. Check back tomorrow for targeted streaming recommendations.

Ownership Movers

  • Gabriel Moreno (35%, +2% 7d) — The move is completely justified. A .419 wOBA and 7.7% K-rate over the past week from the catcher position is rare. Expect this to accelerate.
  • Jacob Young (4%, +2% 7d) — A modest rise, and warranted by the exit velocity data (97.1 mph). The early adopters are smart here, but the .250 AVG will keep the masses away for now.
  • Enyel De Los Santos (3%, stable) — Surprising that a 45.5% K-rate hasn't moved the needle at all. Low-profile reliever on Houston is flying completely under the radar.
  • Ryan McMahon (2%, stable) — A .524 wOBA and 99.8 mph EV with zero ownership movement. This is the definition of a market inefficiency. Being on the Yankees' roster should amplify counting stats — the adds are coming, the question is whether you beat them.
  • Coby Mayo (2%, stable) — Same story as McMahon but with even louder batted-ball data (103.8 mph EV, 87.5% hard-hit rate). Baltimore's lineup provides ample RBI opportunities. The ownership stagnation won't last.

Quick Hits

  • Coby Mayo's 103.8 mph exit velocity is the highest among all flagged players today — and it's paired with an 87.5% hard-hit rate and a K-rate that dropped from 30.1% to 10.0%. That combination at 2% ownership is borderline criminal.
  • Detroit's pitching pipeline is surging: Both Mize (42.9% K-rate, 0.85 FIP) and Anderson (38.1% K-rate, 1.58 ERA) are generating elite strikeout numbers this week. If you're in a league with Tigers pitching still on the wire, you're leaving points on the table.
  • Adolis García's 25.0% walk rate over the past week is a career anomaly — but paired with a 97.2 mph exit velocity and 75.0% hard-hit rate, it reflects genuine selectivity rather than passivity. He's hunting pitches he can drive and laying off everything else.
  • Nolan Arenado's strikeout rate (8.3%) is the second-lowest among today's flagged hitters behind only Moreno's 7.7%. When veteran bats cut their K-rates in half while maintaining hard contact, the hot streak tends to have legs.
  • The catcher position got deeper overnight: Moreno (.419 wOBA), Gasper (.384 wOBA), and Mayo (catcher-eligible in some formats as 1B/3B) all flashed this week. If you've been streaming catchers, now is the time to commit to one of these bats.