Brett Sullivan: A .705 wOBA Over 7 Days Has Our Attention — But Barely

Brett Sullivan has been on WaiverScout's board since Opening Day — and we've told you to ignore him every single time. On April 1, April 11, April 20, May 2, May 20, May 30, and as recently as June 10, our algorithm classified the Colorado catcher as deprioritize. The signal simply wasn't there. Now, for the first time all season, it is — and that shift alone is worth your attention, even if the sample screams caution.

What Changed

Sullivan's last seven days have been violent. A .500 batting average with 3 home runs and a .705 wOBA across just 11 plate appearances represents a different hitter than the one who posted a .267 AVG and .360 wOBA over his 30-day window. His strikeout rate dropped from 12.5% over 30 days to 9.1% over the last seven — he's making more contact and doing more damage with it.

The game log tells the story. On June 11, Sullivan went 3-for-4 with 2 home runs and 2 RBI. Two days later, another homer. RotoBallerMLB flagged his two-homer game, and FantasyPros noted his 3-RBI performance. The broader fantasy community is starting to notice, but ownership remains at 0% with no velocity whatsoever. Nobody has moved on this yet.

Skills Check: Real or Noise?

This is where the enthusiasm needs a governor. Sullivan's 7-day hard-hit rate sits at 50.0% with an exit velocity of 90.0 mph. Those are adequate, not elite. Interestingly, his 14-day numbers actually look better from a batted-ball perspective — 75.0% hard-hit rate and 96.0 mph exit velocity — suggesting the homers are coming during a period where his contact quality has slightly regressed from a brief peak. The 30-day hard-hit rate of 55.6% and 93.3 mph exit velocity paint a picture of a hitter with decent raw power but nothing that screams sustained breakout.

The Coors Field factor is the elephant in the room. Playing half his games at altitude provides a natural floor for power production, but it also inflates numbers in ways that make small samples even harder to trust.

The Sample Size Problem

We're working with 16 plate appearances over 5 games. That's an early signal at best. Sullivan's 30-day line of 4 HR across 32 PA is more useful for evaluation, and a .267 AVG with a .360 wOBA over that stretch is interesting but not transformative. Zero walks across every window — 7-day, 14-day, and 30-day — is a legitimate concern for sustained on-base value.

Positional Context

Catcher is a wasteland, and that's the only reason Sullivan merits monitoring at all. If you're already rostering Iván Herrera, Gabriel Moreno, or Dillon Dingler, you don't need to act. But if your catcher slot is a black hole, Sullivan's recent power surge at least puts him on the radar as a potential streaming option in Coors-heavy stretches.

Verdict: Watch

Do not add Brett Sullivan right now. WaiverScout deprioritized this player seven consecutive times for good reason — he wasn't producing, and the underlying skills didn't demand patience. Early signs suggest something could be emerging, but 16 plate appearances with zero walks and modest exit velocities don't warrant a roster spot. The power is real enough to monitor over the next 7-10 days. If the hard-hit metrics climb back toward that 75% 14-day mark and the home runs keep coming with more playing time, the classification will change. For now, this is a name on your watchlist — nothing more.