Mizuno · 2026 season
Mizuno RB 566
A 2-piece mid-tier ball with an ionomer cover and a measured compression of 92. Everything below is robot-test data, ranked against the other 55 balls in the 2026 field.
Where this ball fits
Measured across three swing-speed bands, the Mizuno RB 566 ranks highest at mid swing speeds (~93 mph), where its driver carry beats 53% of the field. Wedge spin sits at 5,960 rpm (#9 of 56), and at 92 it reads mid-firm against the rest of the 2026 balls.
Fit this against your swingRobot-test performance
| Metric | Slower swing~78 mph | Mid swing~93 mph | Faster swing~108–114 mph |
|---|---|---|---|
| Driver carry | 160.2 yd | 207.9 yd | 268.6 yd |
| Driver spin | 2,381 rpm | 2,553 rpm | 2,719 rpm |
| 7-iron carry | 119 yd | 154.8 yd | 200 yd |
| 7-iron spin | 4,947 rpm | 4,947 rpm | 4,947 rpm |
| Wedge spin | 4,593 rpm | 5,960 rpm | 7,700 rpm |
Source: Test data from 2025 Today's Golfer robot test (2026 model; performance carried over as model unchanged or minor update from prior year)
Against the 2026 field
Higher than 53% of the field
Lower than 63% of the field
Higher than 85% of the field
Lower than 38% of the field
Specification
- Season
- 2026
- Construction
- 2-piece
- Cover
- Ionomer
- Compression
- 92
- Dimples
- 566
- Tier
- mid
- MSRP / dozen
- $25.99
- Best at
- Mid speeds
Where to buy
Balls that behave like it
Nearest by compression, driver carry, driver spin and wedge spin
Callaway
Warbird+
92 compression · Ionomer
Vice
Drive
93 compression · Ionomer
Titleist
Velocity
101 compression · Ionomer
Bridgestone
e12 Speed
103 compression · Ionomer