David Dusek on Twitter: ".@JimmyWalkerPGA has a new set of @Titleist 620 MB irons in the bag, along with a U510 1-iron. #usopen2019 https://t.co/aqIZdyvJog" / Twitter
Titleist releases the 620 CB and 620 MB for elite golfers
Jonathan Wall on Twitter: "Good chance Adam Scott switches to @Titleist 620 MB irons this week. https://t.co/bPczV0lQsF" / Twitter