TaylorMade Qi4D Proto 200+ driver

“Two new TaylorMade Qi4D Proto 200+ drivers were added to the USGA conforming list on Monday and it now looks like they were designed with the scientist's specific needs in mind - as he has been spotted testing them this week in New York.”

“After raising eyebrows earlier in the year when he ditched his Krank driver for a TaylorMade Qi4D Proto 200+ ahead of the US Open at Shinnecock Hills , DeChambeau has now reverted back to his previous big stick.”

“Prior to the start of the US Open, two new models from the brand hit the USGA's Conforming List, as the Qi4D Proto 200+ driver was put in-play by the American for the championship.”

“The more notable change is that DeChambeau was playing with his TaylorMade Qi4D Proto 200+ driver for most of the week leading up to Thursday’s opening round.”