Tai Sach vs Zachary ViialaPrediction, Head-to-Head Results, and Stats
Tai Sach and Zachary Viiala have met 1 time since 2026; Zachary Viiala leads 1–0. Across all meetings Sach has taken 1 sets to Viiala's 2. Their most recent meeting: Zachary Viiala won at M25 Brisbane (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Sach | Viiala | ||
|---|---|---|---|---|
| Indicator | Tai Sach | Zachary Viiala | ||
| Wins in straight sets | 64% | 25/39 | 33% | 1/3 |
| Wins a set when losing | 42% | 15/36 | 75% | 3/4 |
| Goes to a deciding set | 39% | 29/75 | 71% | 5/7 |
| Covers −1.5 sets as favorite | 57% | 20/35 | 0% | 0/1 |
| Covers +1.5 sets as underdog | 61% | 22/36 | 80% | 4/5 |
| Tiebreak sets won | 52% | 11/21 | 57% | 4/7 |
| Wins after taking set 1 | 81% | 34/42 | 100% | 1/1 |
| Wins 2-0 after taking set 1 | 60% | 25/42 | 100% | 1/1 |
Colored rows are higher-is-better: green above 50%, red below. Favorite/underdog set by book odds; cover rows count only matches with odds on record. Small sample — read with care. Head-to-head: 0 of 1 completed meetings ended in straight sets (Sach 0, Viiala 0).
Previous meetings
1 career meeting, newest first
Jul 16, 2026
M25 Brisbane
H Hard · 2nd Round
Prop Research
Hit rates on common betting markets · Last 90 days
| Outcome | Sach | Viiala | ||
|---|---|---|---|---|
| Outcome | Tai Sach | Zachary Viiala | ||
| 1 or more | 100% | 15/15 | 100% | 6/6 |
| 3 or more | 53% | 8/15 | 100% | 6/6 |
| 5 or more | 33% | 5/15 | 50% | 3/6 |
| 10 or more | 7% | 1/15 | 0% | 0/6 |
| 15 or more | 0% | 0/15 | 0% | 0/6 |
| 20 or more | 0% | 0/15 | 0% | 0/6 |
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Sach | Viiala |
|---|---|---|
| W-L | 9–9 | 5–3 |
| Avg odds | 1.70 | 2.60 |
| ROI % | -32.5% | +61.8% |
| Units P/L | -5.85u | +4.94u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Travel
Last 30 days
| Metric | Sach | Viiala |
|---|---|---|
| Countries | 2 | 1 |
| Events | 3 | 1 |
| Matches | 6 | 2 |
| Distance | — | — |
| Route | KAZ → TPE | USA |
Host country from the tournament each match was played in, over the last 30 days. Route is the order of countries visited; consecutive stops in the same country are shown once. Distance is the great-circle total between host cities, shown only when every stop in the window is geocoded. A rough fatigue signal, not a headline stat.
Common opponents
Results vs. opponents both players faced · Last 12 months
Across 2 shared opponents, both Sach and Viiala posted a 50% win rate.
| Opponent | Sach | Viiala |
|---|---|---|
| Jake Delaney | L 67 64 57 | L 26 67 |
| Eric Tripathi | W 61 60 | W 75 36 76 |
Recent Form
Last five matches per player
Matthew Dellavedova
M25 Taipei · 2nd Round
Aug 27
Mukund Sasikumar
M25 Taipei · 1st Round
Aug 26
Matthew Dellavedova
M25 Taipei · Quarterfinals
Aug 21
Chih-Jen Ho
M25 Taipei · 2nd Round
Aug 20
Seongwoo Cho
M25 Taipei · 1st Round
Aug 18
Lucio Ratti
Astana Challenger · 1st Round
Aug 10
Chen Dong
M15 Brisbane · 1st Round
Jul 28
Jeremy Zhang
M15 Brisbane · 1st Round
Jul 22
Marko Mesarovic
M15 Champaign · 2nd Round
Aug 28
Zsombor Velcz
M15 Champaign · 1st Round
Aug 26
Jeremy Beale
M15 Brisbane · 1st Round
Jul 29
Jake Delaney
M15 Brisbane · 2nd Round
Jul 23
Matt Hulme
M25 Brisbane · Semifinals
Jul 18
Jeremy Beale
M25 Brisbane · Quarterfinals
Jul 17
Jeremy Beale
M25 Brisbane · Quarterfinals
Jul 17
Tai Sach
M25 Brisbane · 2nd Round
Jul 16
Win rate
Matches, sets and games won · Last 12 months · 7–75 matches
| Metric | Sach | Viiala |
|---|---|---|
| Matches won | 52% | 43% |
| Sets won | 52% | 47% |
| Games won | 51% | 48% |
Record by tier
Head-to-head record by tournament tier
| Stage | Sach | Viiala |
|---|---|---|
| ITF M25 | 0 | 1 |
By surface
Head-to-head record per surface
| Surface | Sach | Viiala |
|---|---|---|
| Hard | 0 | 1 |
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