Wilson K Factor KPro Staff 88 (2008)
| Length | 27 inches |
| Head size | 88 sq |
| Weight Unstrung | 12.3 oz / 348 grams (+/- 7 g) |
| Weight Strung | 12.8 oz / 363 grams (+/- 7 g) |
| Unstrung Balance | 9pts HL / 31.5cm (+/- 5%) |
| Strung Balance | 6pts HL / 32.4cm (+/- 5%) |
| Swing weight Unstrung | ≈315 (+/- 5%) |
| Swing weight | ≈345 (+/- 5%) |
| Stiffness | ≈67 |
| Width | 17mm Straight Beam |
| Material | [K]arophite Black |
| String Pattern | 16 Mains / 19 Crosses |
| Mains Skip |
A classic that never was...
The Wilson K Factor KPro Staff 88 was designed for Pete Sampras post-retirement, combining classic Pro Staff DNA with modern K Factor technology for enhanced precision and responsiveness. With an 88 sq. in. head, thin box beam, 16×19 string pattern, and a hefty 12.8 oz strung weight, it offered exceptional stability, control, and feel. Its head-light balance made it a niche choice for advanced players seeking a heavy, traditional-style racket.
