I tought Penetta was working on his mental game
Agree with others that fired up Ferrer has.a chance against Zverev.
Seeing Thiem losing a tie break against Opelka is not too much of a surprise. Big servers on a good day can take a set against clay court specialist. Was Isner a few years back 2:0 or 2:1 in sets up against Nadal in RG? I remember watching that. It was a great match. Nadal won in 5 that one.
Coric failing against a Pouille is a surprise, but considering that french built up his form playing a challenger last week and Coric struggling since AO, then not so much of a surprise.