Will Klein: The Dodgers Reliever Nobody's Talking About Is Quietly Dominating

Will Klein has posted a 0.00 ERA with a 13.64 K/9 over his last 3.3 innings, and at 3% rostered, almost nobody has noticed. WaiverScout's algorithm has upgraded him to Watch — and the trajectory of his signal tells a compelling story.

From Deprioritize to Watch: We've Been Tracking This

WaiverScout first flagged Klein back on April 1 when he sat at just 0.3% ownership. At that point, and through subsequent flags on June 4 and June 16, the classification was deprioritize. The stuff wasn't translating to sustained performance. That has changed. His rolling numbers have steadily improved across every window that matters, and the skills metrics have caught up to the raw arsenal. This is no longer a name to ignore.

The Numbers: Strikeout Surge Is Real

Klein's strikeout rate tells the clearest story of development across the rolling windows:

  • 30-day: 12.6 K/9, 1.80 ERA, 3.10 FIP over 10 IP
  • 14-day: 14.65 K/9, 0.00 ERA, 0.54 FIP over 4.3 IP
  • 7-day: 13.64 K/9, 0.00 ERA, 0.98 FIP over 3.3 IP

That 7-day strikeout rate of 35.7% is up sharply from his 30-day mark of 29.8% — a meaningful jump that suggests Klein is missing more bats than ever. More importantly, his FIP has plummeted to 0.98 over the last week and an absurd 0.54 over the last two weeks. This isn't an ERA propped up by luck or defense. The underlying skills — particularly that elite 35.7% K rate — are driving the results.

The Bigger Picture

Klein sits in a Dodgers bullpen alongside established arms like Josh Hader and Aroldis Chapman, which limits his path to saves but not his path to fantasy relevance. In leagues that count holds, K/9, and ratios, Klein is already providing elite production. His sub-1.00 FIP over the last week validates that the strikeouts are real and the contact management is legit.

Razzball currently projects Klein as the 102nd-ranked reliever — essentially an afterthought. FantasyPros doesn't have him in meaningful consensus rankings. The broader fantasy industry hasn't caught up to what this stretch is showing, which is exactly the kind of gap WaiverScout exists to exploit.

The Caveats

We need to be transparent about confidence level here: this is an early signal. We're looking at 3.3 innings in the 7-day window and 10 innings over 30 days. That's not nothing for a reliever — five appearances is a legitimate stretch — but it's not enough to call this a breakout with certainty. The strikeout rate surge could stabilize back toward his 30-day baseline. The pristine ratios almost certainly will regress to some degree.

The Verdict: Watch

Early signs suggest Will Klein could be emerging as a legitimate high-leverage weapon in the Dodgers' bullpen. The K-rate spike from 29.8% to 35.7%, paired with a 0.98 FIP, is the kind of skills-based signal worth monitoring closely. At 3% rostered with stable ownership velocity, there is no urgency to burn a waiver claim — but there is urgency to add him to your watch list before the next week of dominance pushes that ownership number somewhere you can't get him for free.

If the strikeout rate holds above 30% over his next five appearances, this classification moves up. WaiverScout has been watching Klein since April. The signal has only strengthened. Don't sleep through the next upgrade.