What's at stake

A best-of-three Rotterdam Open singles match decides who advances: Karen Khachanov or Jesper de Jong.

Markets include match winner, total sets over/under 2.5, total games over/unders at 22.5 and 21.5, and a Khachanov -1.5 sets handicap.

Who's in play

Karen Khachanov, an established tour veteran, brings a big serve and heavy groundstrokes.

Jesper de Jong is a young Dutch left-hander who relies on court craft and agility. Home crowd support can amplify his intensity.

What drives it

Serve effectiveness and return pressure tilt the match. Khachanov's pace creates free points; de Jong must convert return chances to create breaks.

Indoor hard-court speed, match rhythm, and second-set stamina influence totals and set counts. Early break patterns and tiebreak likelihood shift over/under and the -1.5 handicap market.

What to watch

Look for pre-match warmup pace, serve speeds, and any trainer mentions before play. Late scratches or a shortened warmup change match-up expectations quickly.

During the match, monitor break-point conversion, first-set length, and tiebreaks; those early signals drive live reshaping of totals and the -1.5 set spread. Match scheduled time and court assignment set the timeline.