“Its the most wonderful time fo the year” I’m talking testing and prototype season on the PGA Tour as we head into the winter break. At the RSM Classic, we spotted what looks to be some early Callaway prototype irons in the bag of Aaron Wise.

We’ve seen a few different Callaway Prototype MBs in players’ bags this year including a “special Japanese forged” version made for a few players, including Open Championship winner Francesco Molinari, and more recently, Maverick McNealy.

The new Prototype MB/Blade has all the telltale signs of a traditional Callaway-shaped blade including the thinner hosel-to-top transition—also known as the crotch of the iron—rounded lines, high toe, and short heel-to-toe length. What makes it a unique Callaway iron, of course, is the noticeable screw in the back of the head behind the center of gravity.

This design feature is not new, and for many gear junkies probably brings back memories of the original Adams Pro Black MB irons or the 2011 TaylorMade MBs.

 

By using a weight screw instead of traditional tip weights to get the club to spec, there is zero chance of moving the center of gravity horizontally towards the heel of the club. It helps add mass to improve feel. In most cases, a blade/MB iron from any OEM is built as a showpiece in a classic design. If we are looking at the new Apex MB from Callaway as a potential release in 2020, sticking to a classic style can be a great thing.

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