David Ferrer may be heading into the twilight of his career but the 35-year-old rolled back the years as he beat Hyeon Chung to cruise into the ATP Auckland Classicsemi-final on Thursday.

Spain's Ferrer, a four-time Auckland champion, disposed of the young Korean 6-3, 6-2 in their quarter-final to set up a showdown with Juan Martin del Potro in the final four.

Del Potro beat Russian Karen Khachanov 7-6 (7/4), 6-3 in his quarter-final.

Chung had been a surprise package in the tournament, particularly with the way he outlasted fourth-seed John Isner in a three-set classic on Wednesday.

But he had no answer to the wiles of the veteran Ferrer and could only hold serve three times in the match.

Having seen the 21-year-old Chung chase down everything Isner fired across the net in the second round, Ferrer was in no mood for long rallies and his plan to look for early winners paid off as he wrapped up the match in 74 minutes.

Ferrer, who has slipped from a career high number three to 38 has a 6-4 win record over the 13th ranked del Potro who struggled to get on top of Khachanov.