NEW YORK (Reuters) - Alexander Zverev thrashed Spain's Albert Ramos-Vinolas 6-1 6-0 6-3 in a brisk 74 minutes on Thursday, conserving his energy as he rolled through to the third round of the U.S. Open.

More than half of the German's serves went unreturned in the lopsided affair, after Zverev got a break to kick off the first set and never let up the momentum.