Simona Waltert #90Switzerland22 – 1Petra Marcinko #53Croatia1

Signal quality Medium · Uncertainty band Strong lean · Market price 1.85

The read

Both players' recent matches average over 21.5 games, and their H2H history shows extended contests, making a longer match likely.

• Last 15 average games per match: Waltert 21.9, Marcinko 23.9.
• H2H: 3 of 4 matches had 20+ games, with the most recent having 33 games.
• Both players have break-point conversion rates near 50% in last 15, suggesting competitive games.

Signal quality Medium · Uncertainty band Strong lean · Market price 1.60

The read

Waltert is likely to keep the match close, as she has done in most H2H meetings, and her return game is on par with Marcinko's.

• Last 15 average game differential: Waltert -0.4 per match, Marcinko +0.3 per match.
• H2H: Waltert has covered +3.5 games in 3 of 4 matches, including the loss on grass (lost by 3 games).
• Waltert's return points won (45%) matches Marcinko's (45%) in last 15.

Signal quality Medium · Uncertainty band Lean · Market price 1.91

The read

The first set is likely to be tight, with both players holding serve at a decent rate, pushing the total over 9.5 games.

• Last 15: Waltert's set1 average games 9.7, Marcinko's 9.9.
• H2H: First sets have averaged 9.5 games, with the most recent being 10 games.
• Both players have first-serve points won around 63-66%, indicating holds are common.

Signal quality Low · Uncertainty band Lean · Not priced

The read

Similar to set 1, the second set is expected to be competitive, though confidence is lower due to potential momentum shifts.

• Last 15: Waltert's set2 average games 9.3, Marcinko's 9.8.
• H2H: Second sets have averaged 9.8 games.
• Both players have break-point save rates above 46% in last 15.

Signal quality Medium · Uncertainty band Lean · Market price 2.30

The read

With both players showing a tendency for three-set matches and a recent H2H that went the distance, a deciding set is plausible.

• Last 15: Waltert played 3-setters in 6 of 15 matches (40%), Marcinko in 7 of 15 (47%).
• H2H: 2 of 4 matches went to 3 sets, including the most recent.
• Both players have deciding-set win rates around 50% in last 15.

Signal quality Low · Uncertainty band Slight lean · Not priced

The read

Marcinko's slightly stronger serve and high first-set conversion rate suggest she may start better, but the edge is narrow given both players' inconsistent form.

• Last 15 first-serve points won: Marcinko 66% vs Waltert 63.2%.
• Marcinko's career first-set win conversion is 90%, Waltert's is 86%.
• H2H: Marcinko won the first set 6-4 in their most recent match.

Signal quality Medium · Uncertainty band Strong lean · Not priced

The read

Marcinko's extremely high double-fault rate (7.7 per match) makes the combined total likely to exceed 10.5, even if Waltert's rate is moderate.

• Last 15 double faults per match: Waltert 3.7, Marcinko 7.7, combined 11.4.
• Marcinko's double-fault rate is consistently high across surfaces (7.7 on clay, 7.8 on grass).
• H2H: Combined double faults in 4 matches: 26 (6.5 per match), but Marcinko's recent rate is higher.

Signal quality Low · Uncertainty band Slight lean · Not priced

The read

The combined ace rate is near the line, and hard courts may slightly boost ace counts, but the edge is marginal.

• Last 15 aces per match: Waltert 2.0, Marcinko 3.0, combined 5.0.
• H2H: Combined aces in 4 matches: 20 (5.0 per match).
• Hard court 2026: Waltert's ace rate slightly higher on hard (2.3 per match estimated from career).