Wilson Staff Di7 vs Wilson Staff Di9
Side-by-side factory specifications. Differing values are highlighted.
Specification comparison
| Club | Staff Di7 loft | Staff Di9 loft | Staff Di7 lie | Staff Di9 lie | Staff Di7 length | Staff Di9 length |
|---|---|---|---|---|---|---|
| 3 | 20 | 18 | 59.5 | 59.5 | 39.5 | 39.5 |
| 4 | 23 | 21.5 | 60 | 60 | 39 | 39 |
| 5 | 25.5 | 25 | 61 | 61 | 38.5 | 38.5 |
| 6 | 28.5 | 28.5 | 61.5 | 61.5 | 38 | 38 |
| 7 | 31.5 | 32 | 62 | 62 | 37.5 | 37.5 |
| 8 | 35 | 35.5 | 63 | 63 | 37 | 37 |
| 9 | 39 | 39 | 63.5 | 63.5 | 36.5 | 36.5 |
| PW | 43 | 42.5 | 64 | 64 | 36 | 36 |
| AW | — | 46 | — | 64 | — | 36 |
| GW | 49 | 49.5 | 64 | 64 | 36 | 36 |
| SW | 55 | 55 | 64 | 64 | 36 | 36 |
Highlighted cells differ between the two sets. Lofts and lies are factory standard.
Lofts compared
- Staff Di7
- Staff Di9
What the differences mean
At the 7-iron, the Staff Di7 is 31.5° and the Staff Di9 is 32°, a 0.5° gap. Each degree of loft is worth roughly 3 to 4 yards of carry at the same swing speed, so the Staff Di7 should carry about 2 yards further with that club, on a slightly lower, shallower flight than the Staff Di9. Across the 10 clubs both sets share, the Staff Di9 averages 0.3° stronger, with the largest gap at the 3-iron (20° vs 18°). The pitching wedges are 43° and 42.5°; the stronger one leaves a 7.5° jump to a 50° gap wedge, which matters when planning wedge gapping.
The sets are built differently: the Staff Di7 runs 3-iron to SW (10 clubs), the Staff Di9 3-iron to SW (11 clubs).
Both are game improvement irons, built for roughly 10 to 25 handicaps. Perimeter-weighted cavity backs with wider soles, more offset and stronger lofts, aimed at mid handicaps. Because they target the same golfer, the decision comes down to the specific loft, feel and shaping differences rather than who the sets are made for.
The Staff Di7 is listed as cast undercut cavity and the Staff Di9 as cast cavity back. With the build method this similar, differences in feel come down to head size, sole width, topline and offset rather than how the heads are made.
The Staff Di9 arrived 2 years after the Staff Di7, a typical one-generation refresh. Changes over that span are usually incremental: refined face thickness, revised weighting, updated looks and small loft tweaks rather than a new concept. Here the 7-iron loft moved from 31.5° to 32°.
Which should you choose?
The Staff Di9 is the stronger-lofted set — up to 2° stronger than the Staff Di7 on matching clubs. Expect longer carry per numbered iron but a flatter descent angle; gapping at the wedge end is where that shows up.
Both charts are reproduced in full on their own pages: Wilson Staff Di7 specs and Wilson Staff Di9 specs.
Frequently asked questions
Is the Wilson Staff Di7 stronger lofted than the Staff Di9?
Yes. The Wilson Staff Di7 7-iron is 31.5° against 32° for the Staff Di9, 0.5° stronger, which is worth about 2 yards of extra carry with the same swing.
What is the loft difference between the Wilson Staff Di7 and Staff Di9?
At the 7-iron the difference is 0.5° (31.5° vs 32°). The largest gap on a shared club is 2° at the 3-iron, and 7 of the 10 shared clubs differ.
Are the Wilson Staff Di7 and Staff Di9 aimed at the same golfer?
Yes. Both are game improvement irons, built for roughly 10 to 25 handicaps. Choose on feel, looks and gapping, ideally after hitting both.
Do the Wilson Staff Di7 and Staff Di9 have the same lie and length?
At the 7-iron, yes: both are 62° lie and 37.5 inches long.
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