77.5 sq. inches
Our Test Results: Wilson Hyper Hammers are the stiffest racquets around, they feel very crisp and precise.
I was surprised how much I liked Hyper Hammer 140.
It has more power than my Hyper Hammer 145, and it felt more solid than the Hyper Hammer 120.
I love the shape of the Wilson octagonal grip, I think is optimal. It is not too flat and oval, like Prince grips,
and not too big and square like Head grips. Factory stringing on all Wilsons this year is improved,
they are strung with Sensation Strike 17 gauge string that plays absolutely great. The power of that string is excellent,
and it grips the ball as well, if not better than Supernick. The Power Holes feature on
Wilson racquets works wonders on returning a tight drive. It allows for surprising power,
and your drive comes back tight. I never played with a racquet that does that until I picked up the Wilson.
I liked it so much I stopped noticing the whistling sound the air made going through Power Holes.