Ethan Holliday
Colorado Rockies · Age at assessment: 19.6 · Bats: L · Throws: R
Game power ahead of the tool grade
Current extra-base impact is outperforming the verified power expectation
High Confidence · 91%Why the player is here
- Power 65; game-power evidence sits near the 95th percentile for comparable players
- ISO is 0.295
Context for this assessment, not a verified explanation for movement between model runs.
Tool vs observed results
Percentile scaleVerified tool expectations alongside results for comparable players. Percentiles are not scouting grades.
Model history
Median movement2026-09-24 · Median 74
View recorded values
| Date | Median |
|---|---|
| 2026-09-24 | 74 |
| 2026-09-22 | 74 |
| 2026-09-21 | 74 |
| 2026-09-19 | 74 |
| 2026-09-18 | 74 |
| 2026-09-17 | 74 |
| 2026-09-16 | 74 |
| 2026-09-15 | 74 |
| 2026-09-14 | 73.9 |
| 2026-09-09 | 75 |
| 2026-09-06 | 76 |
| 2026-09-05 | 76 |
| 2026-09-03 | 76 |
| 2026-09-02 | 76 |
| 2026-09-01 | 76 |
| 2026-08-28 | 76 |
| 2026-08-27 | 76 |
Metrics to follow
Separates extra-base impact from batting average
Definition
Isolated power, calculated as slugging percentage minus batting average
Tracks total bases per at-bat
Definition
Slugging percentage, weighting extra-base hits more heavily
Shows the swing-and-miss cost of accessing power
Definition
Percentage of plate appearances ending in a strikeout. Lower is generally better for hitters
Next checkpointRecheck ISO, SLG, and K% after the next 75 plate appearances
