So tennis stumbles into the perfect line calling situation last week, works perfectly.

This week, a Grand Slam decides to NOT use said system ON ITS TWO BIGGEST COURTS.

In one of the first matches on those courts, a line judge blows a call on set point.

It wasn't even the first error. Also, the mistake stood, because the chair umpire, notoriously spineless Dumusois, didn't overrule, and Djokovic didn't have a challenge left.

WHY THE F**** ARE WE DOING THIS?

This sport....

Also, the sheer idiocy of the US Open using a different protocol for the shot clock than THE TOURNAMENT THAT TOOK PLACE AT THE SAME VENUE LAST WEEK is just too much.

Only way this kind of shit changes is if ALL the players unionize.