- Heinrich vs. Visser: Set 2 Games O/U 9.50¢
- Heinrich vs. Visser: Set 1 Games O/U 9.50¢
- Heinrich vs. Visser: Set 2 Games O/U 8.5100¢
- Set Handicap: Heinrich (-1.5) vs Visser (+1.5)0¢
- Set 1 Winner: Heinrich vs Visser0¢
- Heinrich vs. Visser: Match O/U 23.5100¢
- Heinrich vs. Visser: Match O/U 21.5100¢
- Sebastian Heinrich vs. Mac Visser: Total Sets O/U 2.5100¢
- Heinrich vs. Visser: Set 1 Games O/U 8.50¢
- Heinrich vs. Visser: Set 1 Games O/U 10.50¢
- Heinrich vs. Visser: Match O/U 22.5100¢
- Set Handicap: Visser (-1.5) vs Heinrich (+1.5)0¢
This market refers to the tennis match between Sebastian Heinrich and Mac Visser in the ITF MEN - SINGLES: M25 Oldenzaal (Netherlands), clay, originally scheduled for August 26, 2026 at 4:00AM ET. This market will resolve to 'Sebastian Heinrich' if Sebastian Heinrich advances against Mac Visser. This market will resolve to 'Mac Visser' if Mac Visser advances against Sebastian Heinrich. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 9, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the International Tennis Federation (ITF). A consensus of credible reporting may also be used.
Mac Visser, the 21-year-old Dutch player ranked around 1260-1310, enters this M25 Oldenzaal clay-court encounter as the clear favorite against 17-year-old German Sebastian Heinrich. Visser brings greater ITF experience, a stronger 2026 clay record (multiple wins in M15/M25 events), and home-country familiarity, while Heinrich, still transitioning from juniors, holds a much lower ranking and has shown limited success in senior main draws. The surface rewards consistent baseline rallies and movement, areas where Visser's recent form on European clay gives him an edge. No prior head-to-head exists, leaving recent results and physical maturity as primary differentiators in what projects as a competitive but lopsided matchup.