
2nd Swing Golf
Master fitters, Trackman-heavy testing
Loved it“The S1 wins the beauty contest.”
Winner of the blade category, which the fitter admits is a beauty contest, and this one is extremely pretty while also delivering very consistent, higher spin rates with classic Mizuno feel.
+ the facts · 4 pros · 2 cons− the facts
- +Fitters' choice winner in the blade category
- +Classic Mizuno look and feel, called the prettiest of the group
- +Very consistent performance with reliably high spin rates
- −Tiny head demands precise striking and carries about 15 yards shorter than the G440
- −Widest carry deviation of the four in this test at 1.4 yards, and a 120 rpm spin deviation
For: Skilled ball-strikers playing blades in the bottom half of the set, often blended up into more forgiving heads

Michael Newton Golf
On-course, season-long club tests
Loved it“That feels buttery. That feels soft.”
A stunning, phenomenally soft-feeling pure muscle back with tight, controlled dispersion, but the tiny head means only strong ball strikers need apply.
+ the facts · 6 pros · 4 cons− the facts
- +Phenomenal buttery, muted feel from the grain flow forged 1025 steel with copper underlay
- +Stunning nickel soft satin white finish with no glare in sunlight
- +Very tight front-to-back carry dispersion and consistent spin with no flyers
- −Extremely compact head makes the ball look big and offers little confidence at address
- −Heel and toe misses get punished with ball speed loss
- −No 3-iron in the set (4-PW only)
For: Elite ball strikers who want a pure compact blade and can handle the lack of forgiveness

Club Champion (TXG)
Tour-level fitting studio
Loved it“This is a phenomenal iron.”
A gorgeous, feel-first bladed player's iron that rewards center strikes with elite feedback and workability, but punishes toe misses with 10-15 yards of lost distance.
+ the facts · 5 pros · 3 cons− the facts
- +Outstanding feel from Grain Flow Forged HD 1025E steel with copper underlay
- +Harmonic Impact Technology channel-back design controls vibration
- +Muted satin finish and clean Mizuno Pro script look premium, not intimidating
- −Small sweet spot; toe or heel strikes lose 10-15 yards
- −Not forgiving enough for most amateurs
- −Forged construction means a higher price than cast irons
For: Pro to low-handicap ball strikers who consistently find the center and want feel plus known yardages over forgiveness

MyGolfSpy
Data-driven independent testing
Loved it“cheap tequila, blue-eyed brunettes, and the Mazuno S1”
The muscle back in Mizuno's signature series and easily the most gushed-over club in the episode. The hosts love the matte sandblasted finish, the channel back detail and the revised feel, and admit it is tempting them into a bad decision.
+ the facts · 5 pros · 1 cons− the facts
- +Outstanding matte, sandblasted aesthetic rather than bright chrome
- +Channel back nudges MOI up slightly for a blade
- +Feel tuned to be less mushy and more responsive without getting harsh
- −It is still a muscle back, so forgiveness is close to zero
For: Accomplished ball strikers who want a blade, at $215 per club