A whopping 12 of the 60 players in the field at the Dubai Invitational are playing one of Callaway's unreleased Quantum drivers. Among those are staffers like Nicolai Hojgaard, Rasmus Hojgaard and Tom McKibbin, as well as four non-contracted players. Pretty good start for the platform which has already seen Akshay Bhatia and Xander Schauffele switch to it after both played older model drivers last year.