Frances Tiafoe lost to Jason Jung in his first match since the Australian Open.  But American men are still having a good tournament with Sam Querrey, John Isner and Reilly Opelka moving on to the semi finals.  Canadian qualifier  Brayden Schnur, ranked 154th,  will join the Americans  in the semi final.

Semi Finals

Opelka Vs Isner

Querrey Vs Schnur