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Sion (Switzerland) Predictions & Picks — August 19, 2026

By The Maiden Desk · August 19, 2026

Every number below was fixed before the match and graded against the official result.

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2 matches are on Wednesday's card at Sion (Switzerland), and we have a pick for every one of them. The headline act: Calvin Hemery against Mika Brunold in the round of 16. Our calls: Hemery over Brunold, Hassan over Kopp.

The boldest call on the card: Hemery over Brunold — the market disagrees with us there.

Benjamin Hassan vs. Sandro Kopp

✓ Pick rightWe got this one right. Benjamin Hassan was our 57% pick, and won 3-6 6-1 6-4.

Pick: HassanUpset call

Upset call: the market favors Kopp; our numbers say Hassan.

Win probability: 57% Hassan · Market: +177 · Sets: 3 (48%) · most likely score 2-0 (30%)

A spot in the next round is at stake on Wednesday, when Benjamin Hassan goes up against Sandro Kopp in the Sion (Switzerland) round of 16. Benjamin Hassan has won 5 of the last 10. Sandro Kopp is 4-6 across recent matches.

The serve is where this match separates: Hassan has been winning 70% of first-serve points to Kopp's 64.9%, and on clay that gap compounds fast. Hassan arrives with very little recovery time; Kopp comes in off a compressed schedule. Little separates them; Hassan gets the nod on the finest of margins.

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Calvin Hemery vs. Mika Brunold

✗ Pick wrongA miss: Calvin Hemery at 64% lost to Mika Brunold (6-3 3-6 6-3).

Pick: HemeryUpset call

Upset call: the market makes Brunold the favorite; our numbers say Hemery.

Win probability: 64% Hemery · Market: +142 · Sets: 3 (52%) · most likely score 2-1 (34%)

Wednesday's Sion (Switzerland) round of 16 pits Calvin Hemery against Mika Brunold on clay. Calvin Hemery is 8-2 across recent matches. Mika Brunold has won 5 of the last 10.

Hold strength tells the story — 73.4% versus 67.1% on first-serve points in Hemery's favor. Hemery comes in off a compressed schedule; Brunold comes in off a compressed schedule. The edge belongs to Hemery — real, but not the kind you take for granted at this level.

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Updated Aug 19, 2026, 2:00 AM UTC. Picks are frozen before first serve and graded on the track record page — this page is never edited after the fact.