Sam Querrey and John Isner have interesting views on Coco Gauff firing her coach just before the US Open A big change!

A big change! #CocoGauff #JohnIsner #MattDaly #SamQuerrey

Coco Gauff already noticed making change to her game since swapping coaches, 'you can see the difference' Strong start!

Strong start! #CocoGauff #GavinMacMillan #MattDaly #RickMacci

Matt Daly gives his honest opinion on Coco Gauff as they end their coaching relationship before the US Open That's a shock!

That's a shock! #CocoGauff #MattDaly #USOpen #WTA