What changed for JJ Bleday.
From 2025 to 2026, JJ Bleday's Barrel% moved from 4.7% to 10.7%. Here's everything else the data sees that changed.
Something has changed for JJ Bleday, now 29, between 2025 and 2026. We went through what the data can actually measure, including contact, plate approach, swing shape, and the results they produce, to separate the signal from the noise. The clearest gain: Barrel% moved from 4.7% to 10.7%, which now sits in the 92th percentile leaguewide. It hasn't been all one direction. Oppo% has slipped from 19.1% to 14.9%, but the trade has largely worked so far.
The Results
On the bottom-line production (what it all adds up to), the arrows point the right way. Bleday has improved on OPS (0.714→1.109), xSLG (0.490→0.711), and wOBA (0.332→0.497), with nothing here moving meaningfully against him.
| Metric | 2025 | 2026 | Change | League now |
|---|---|---|---|---|
| xwOBA | 0.276 | 0.409 | ▲ +0.132 | 94th |
| wOBA | 0.332 | 0.497 | ▲ +0.166 | 100th |
| xSLG | 0.490 | 0.711 | ▲ +0.221 | 80th |
| OPS | 0.714 | 1.109 | ▲ +0.394 | 100th |
The biggest move is OPS, up from 0.714 to 1.109 (+0.394). It's been a clean step forward here.
Contact Quality
On the quality of contact (how hard and how flush he's hitting the ball), the arrows point the right way. Bleday has improved on Exit Velo (88.4 mph→91.7 mph), Hard-Hit% (38.2%→52.1%), and Sweet-Spot% (30.9%→43.6%), with nothing here moving meaningfully against him.
| Metric | 2025 | 2026 | Change | League now |
|---|---|---|---|---|
| Exit Velo | 88.4 mph | 91.7 mph | ▲ +3.3 | 78th |
| Barrel% | 4.7% | 10.7% | ▲ +6.0 pts | 92th |
| Hard-Hit% | 38.2% | 52.1% | ▲ +13.9 pts | 86th |
| Sweet-Spot% | 30.9% | 43.6% | ▲ +12.7 pts | 95th |
The biggest move is Exit Velo, up from 88.4 mph to 91.7 mph (+3.3). It's been a clean step forward here.
Plate Approach
On his approach at the plate (what he swings at and how often he misses), the arrows point the right way. Bleday has improved on K% (25.4%→18.6%), Chase% (26.6%→22.7%), and BB% (10.2%→13.6%), with nothing here moving meaningfully against him.
| Metric | 2025 | 2026 | Change | League now |
|---|---|---|---|---|
| Chase% | 26.6% | 22.7% | ▲ -3.9 pts | 80th |
| Whiff% | 28.4% | 27.2% | ▲ -1.2 pts | 24th |
| K% | 25.4% | 18.6% | ▲ -6.8 pts | 64th |
| BB% | 10.2% | 13.6% | ▲ +3.4 pts | 78th |
The biggest move is K%, down from 25.4% to 18.6% (-6.8 pts). It's been a clean step forward here.
Swing & Batted-Ball Shape
On his swing and batted-ball shape (the mechanical fingerprint behind the changes above), it's a genuine mix. Bleday has gained ground on Bat Speed (69.6 mph→71.3 mph), Launch Angle (20.3°→20.5°), and Ground-Ball% (40.0%→30.9%), while slipping on Swing Length (7.4 ft→7.5 ft) and Oppo% (19.1%→14.9%). The net picture is a real shift in profile, not a simple up-or-down.
| Metric | 2025 | 2026 | Change | League now |
|---|---|---|---|---|
| Launch Angle | 20.3° | 20.5° | ▲ +0.2 | 94th |
| Pull% | 54.5% | 59.6% | ▲ +5.0 pts | 99th |
| Oppo% | 19.1% | 14.9% | ▼ -4.2 pts | 0th |
| Ground-Ball% | 40.0% | 30.9% | ▲ -9.1 pts | 96th |
| Bat Speed (2024+) | 69.6 mph | 71.3 mph | ▲ +1.7 | 54th |
| Swing Length (2024+) | 7.4 ft | 7.5 ft | ▼ +0.1 | 34th |
The biggest move is Bat Speed, up from 69.6 mph to 71.3 mph (+1.7).
The takeaway
Bottom line: between 2025 and 2026, the broad picture is a step forward, and the results are following the process. More of Bleday's underlying markers are pointing up than down. It's worth re-checking as the sample grows, but the direction is already readable in the numbers.
How to read this
- Sample sizes are modest (2025 362 PA, 2026 140 PA), so read the magnitude of these changes with some caution.
- This compares what the data can measure (contact, approach, swing and batted-ball shape). Stance, hand position, and leg-kick changes are not in the public data and are not claimed here.