That’s just a killer way to lose the set for Ben Shelton. He gets broken via a double fault in the first game of the match. Then, on set point, the American double-faults, handing Alexander Zverev the opener.
Eighteen combined errors in the first set tell the tale for Shelton. Those mistakes came at inopportune times.
Zverev served well in the opener, only losing one point on his first serve. He never faced a break point.

