Unbelievable from Isner, was superb out there today. His best performance ever, he was hitting aces, huge 2nd kick serves, winners off the return, huge forehands, great volleys. Everything, top5 performance for sure. Huge and rightfully deserved win which creates an huge advantage to USA.
As for Fed, it wasn't good, he couldn't handle Isner power and deserved to lose. Hopefully he gets it done in Rotterdam.