TITLEIST TSi1 DRIVER    The TSi2 and TSi3 drivers were released in late 2020 to universal acclaim, with bold, new technologies and materials combining to make what was unquestionably their best ever range. They were quickly adopted by tour players and saw more use by non-contracted Titleist players than ever before.    Titleist have now released the final two drivers to complete the TSi family, The TSi1 and TSi4 and these two drivers could not be more polar opposites. The Titleist TSi1 is by far the lightest, most forgiving and easiest to get airborne driver that you could ever wish to hit and it has been constructed with super-lightweight components.    The Titleist TSi1 driver benefits from a deep, face centred centre of gravity...