Adam Neff vs Zack ViialaPrediction, Head-to-Head Results, and Stats
Adam Neff and Zack Viiala have met 1 time since 2024; Zack Viiala leads 1–0. Across all meetings Neff has taken 1 sets to Viiala's 2. Their most recent meeting: Zack Viiala won at Champaign (2024).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Neff | Viiala | ||
|---|---|---|---|---|
| Indicator | Adam Neff | Zack Viiala | ||
| Wins in straight sets | — | 0% | 0/2 | |
| Wins a set when losing | — | — | ||
| Goes to a deciding set | — | 100% | 2/2 | |
| Covers −1.5 sets as favorite | — | — | ||
| Covers +1.5 sets as underdog | — | 100% | 1/1 | |
| Tiebreak sets won | — | 50% | 1/2 | |
| Wins after taking set 1 | — | — | ||
| Wins 2-0 after taking set 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 (Neff 0, Viiala 0).
Previous meetings
1 career meeting, newest first
Nov 10, 2024
Champaign
H Hard · 1st Round Qualifying
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Neff | Viiala |
|---|---|---|
| W-L | - | 1–0 |
| Avg odds | - | 2.81 |
| ROI % | - | +181.0% |
| Units P/L | - | +1.81u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Recent Form
Last five matches per player
Zack Viiala
Champaign · 1st Round Qualifying
Nov 10
Kyle Edmund
Columbus · 1st Round Qualifying
Sep 16
Patrick Maloney
Las Vegas · 2nd Round Qualifying
Sep 9
Emmanuel Alex
Las Vegas · 1st Round Qualifying
Sep 8
Liam Draxl
Santo Domingo · 1st Round Qualifying
Aug 11
Ryan Seggerman
Bloomfield Hills · 1st Round Qualifying
Jun 30
Ethan Quinn
Tyler · 1st Round Qualifying
Jun 2
Yusuke Takahashi
Little Rock · 2nd Round Qualifying
May 27
Tai Sach
Futures 2026
Jul 16
Taiki Takizawa
Futures 2026
Jul 15
Alex Rybakov
Champaign · 2nd Round Qualifying
Nov 11
Adam Neff
Champaign · 1st Round Qualifying
Nov 10
Li Tu
Playford · Round of 32
Oct 23
Rubin Statham
Traralgon · 1st Round Qualifying
Jan 2
Win rate
Matches, sets and games won · Last 12 months · 2–2 matches
| Metric | Neff | Viiala |
|---|---|---|
| Matches won | - | 100% |
| Sets won | - | 67% |
| Games won | - | 54% |
Record by tier
Head-to-head record by tournament tier
| Stage | Neff | Viiala |
|---|---|---|
| ATP Challenger Tour | 0 | 1 |
By surface
Head-to-head record per surface
| Surface | Neff | Viiala |
|---|---|---|
| Hard | 0 | 1 |
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