Jeff Wolf and Stefan Kozlov will play each other in the semifinal of the Champaign Challenger for the 7th time in their career. They are scheduled to compete on Saturday at 2:30 pm on COURT 1. In this post, we analyze their head to head performance and prediction.
Prediction, odds and live streaming
The pick for Tennis Tonic is Stefan Kozlov who should win in 3 sets.
As per the initial odds, Stefan Kozlov is the pick to win this match.
Stefan Kozlov -> 1.89
Jeff Wolf -> 1.909
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Prediction and head to head Jeff Wolf vs. Stefan Kozlov
This will be the 7th time that Jeff Wolf and Stefan Kozlov play each other. The head to head is 3-3 for Wolf and Kozlov (see full H2H stats),but they are 2-2 on indoor hard courts.
The last time that they competed against each other, Kozlov won 6-1 6-7(1) 6-0 in the semifinal in the Charlottesville Challenger back in November 2021.
Jeff Wolf
Ranked no. 184, the American got to the semifinal after defeating Tatsuma Ito 6-3 3-6 6-3, Kaichi Uchida 6-3 6-4 and Vasil Kirkov 6-3 6-2.
In the quarter, Jeff had a good straight sets win against Kirkov (6-3 6-2). During the match, Wolf scored 62 points vs Kirkov’s 46. The American was extremely aggressive to blast 21 winners.
Regarding the service games, Wolf struck 7 aces and he committed only 3 double faults. Jeff Wolf was pretty effective on serve to win 75% (21/28) of his 1st serve and 64% (18/28) on the second serve. This was the main reason for not conceding a single break during the match. Jeff broke Kirkov 3 times after converting 50% of his break points (3/6).
Overall Performance in this tournament
Wolf started his run at this tournament from the qualifications. In the main draw, he has surrendered 1 set in this event to conquer 55% of the points he played.
Wolf has a solid record in the last 7 years having won 61% of his matches (93-60). 9-3 on indoor hard courts in 2021. Regarding his performance on the same surface of this tournament, Wolf has an overall45-20 match record in the last 7 years on indoor hard courts.
His best result of the current year was conquering the title in the Las Vegas Challenger where he beat Stefan Kozlov in the final 6-4 6-4.
Wolf has an aggregate 16-10 win-loss record in 2021, 9-3 on indoor hard courts (See FULL STATS).
Previously in the Champaign Challenger
Previously, he won this tournament once in 2019. See his history.
Stefan Kozlov
Ranked no. 187, Kozlov got to the semifinal after beating Jc Aragone 3-6 6-3 6-4, Keegan Smith 6-3 6-1 and Mitchell Krueger 6-4 6-4.
In the quarter, The American had a good straight sets win against Krueger (6-4 6-4). During the match Kozlov scored 68 points vs Krueger’s 59. Kozlov was very aggressive to blast 30 winners.
About the serving games, Kozlov scored 5 aces and he committed only 6 double faults. Stefan Kozlov lost the serve twice and he saved 1 break points. Furthermore, Kozlov put 67% of his first serves in, winning 68% (30/44) of the points behind his 1st serve and 50% (11/22) on the 2nd serve. The American broke Krueger 4 times after converting 57% of his break points (4/7).
Overall Performance in this tournament
The American started his run at this tournament from the qualifications. In the main draw, he has conceded 1 set in the tournament to win 55% of the points he played.
His best result of the year was winning the title in the Columbus Challenger where he beat Max Purcell in the final 4-6 6-2 6-4 and in the Charlottesville Challenger where he defeated Aleksandar Vukic in the final 6-2 6-3.
The American has a composed 39-15 win-loss record in 2021, 14-1 on indoor hard courts (See FULL STATS).
H2H Performance in the tournament
Matches, sets, games and points
| Points | Wolf | Kozlov |
|---|---|---|
| Match played | 3 | 3 |
| Tot Set | 7 | 7 |
| Tot Games | 63 | 64 |
| Pts | 218-175 | 235-196 |
| Total Points | 393 | 431 |
| Winners | 86 | 95 |
| %Winners | 39% | 40% |
Both Wolf and Kozlov played 3 matches. Both players lost a set in the event. Jeff Wolf conceded 1 set, while Stefan Kozlov conceded 1 set. Talking about their workload, Wolf and Kozlov have played the same amount of sets 7. However, Wolf played 1 game less than Kozlov. Jeff scored 86 winners (39% of the total points). On the other side, Stefan recorded 95 winners (40%).
Serve Performance
| Serve | Wolf | Kozlov |
|---|---|---|
| Aces | 26 | 9 |
| Avg per match | 8.7 | 3 |
| 1st in | 112/190 | 129/201 |
| %1st in | 59% | 64% |
| 1st pts | 86/112 | 95/129 |
| %1st pts | 77% | 74% |
| 2nd pts | 50/78 | 35/72 |
| %2nd pts | 64% | 49% |
Wolf scored 26 aces (8.7 per match). Kozlov struck 9 aces (3 per match). Wolf won 77% points behind his first serve. He very solid his second serve to win 64% of the points. On the other side, Kozlov won 74% of the points behind his first serve. He had a solid display on his second serve to win 49% of the points.
How they played the important points
| Breaks | Wolf | Kozlov |
|---|---|---|
| Won | 8 | 12 |
| Converted | 8/22 | 12/31 |
| % Converted | 36% | 39% |
| Conceded | 9 | 15 |
| Saved | 7 | 10 |
| % Saved | 78% | 67% |
| Times Broken | 2 | 5 |
The American broke his opponents 8 times with a 36% conversion rate. Wolf conceded his serve twice and he saved 78% of the break points that he conceded. The American broke his opponents 12 times with a 39% conversion rate. Stefan conceded his serve 5 times and he saved 67% of the break points that he conceded.
| Wolf | |||||
| R1 Ito |
R2 Uchida |
1/4 Kirkov |
Total | ||
|---|---|---|---|---|---|
| Score | 6-3 3-6 6-3 | 6-3 6-4 | 6-3 6-2 | ||
| Tot Set | 3 | 2 | 2 | 7 | |
| Tot Games | 27 | 19 | 17 | 63 | |
| pts | 91-81 | 65-48 | 62-46 | 218-175 | |
| Total points | 172 | 113 | 108 | 393 | |
| Winners | 35 | 30 | 21 | 86 | |
| %Winners | 38% | 46% | 34% | 39% | |
| SERVE | |||||
| Aces | 11 | 8 | 7 | 26 | |
| Double Faults | 5 | 3 | 3 | 11 | |
| 1st in | 48/78 | 36/56 | 28/56 | 112/190 | |
| % 1st in | 62% | 64% | 50% | 59% | |
| 1st pts | 35/48 | 30/36 | 21/28 | 86/112 | |
| % 1st pts | 73% | 83% | 75% | 77% | |
| 2nd pts | 19/30 | 13/20 | 18/28 | 50/78 | |
| % 2nd pts | 63% | 65% | 64% | 64% | |
| Breaks | |||||
| Won | 3 | 2 | 3 | 8 | |
| Converted | 3/10 | 2/6 | 3/6 | 8/22 | |
| Converted % | 30% | 33% | 50% | 36% | |
| Conceded | 5 | 2 | 2 | 9 | |
| Saved | 3/5 | 2/2 | 2/2 | 7 | |
| Saved % | 60% | 100% | 100% | 87% | |
| Times Broken | 2 | 0 | 0 | 2 | |
| Kozlov | |||||
| R1 Aragone |
R2 Smith |
1/4 Krueger |
Total | ||
|---|---|---|---|---|---|
| Score | 3-6 6-3 6-4 | 6-3 6-1 | 6-4 6-4 | ||
| Tot Set | 3 | 2 | 2 | 7 | |
| Tot Games | 28 | 16 | 20 | 64 | |
| pts | 113-106 | 54-31 | 68-59 | 235-196 | |
| Total points | 219 | 85 | 127 | 431 | |
| Winners | 44 | 21 | 30 | 95 | |
| %Winners | 39% | 39% | 44% | 40% | |
| SERVE | |||||
| Aces | 2 | 2 | 5 | 9 | |
| Double Faults | 2 | 3 | 6 | 11 | |
| 1st in | 59/90 | 26/45 | 44/66 | 129/201 | |
| % 1st in | 66% | 58% | 67% | 64% | |
| 1st pts | 44/59 | 21/26 | 30/44 | 95/129 | |
| % 1st pts | 75% | 81% | 68% | 74% | |
| 2nd pts | 13/31 | 11/19 | 11/22 | 35/72 | |
| % 2nd pts | 42% | 58% | 50% | 49% | |
| Breaks | |||||
| Won | 3 | 5 | 4 | 12 | |
| Converted | 3/16 | 5/8 | 4/7 | 12/31 | |
| Converted % | 19% | 63% | 57% | 39% | |
| Conceded | 7 | 5 | 3 | 15 | |
| Saved | 5/7 | 4/5 | 1/3 | 10 | |
| Saved % | 71% | 80% | 33% | 61% | |
| Times Broken | 2 | 1 | 2 | 5 | |
Head 2 Head
LLWWLWWLLW
LWLWWLWWLW Tennis Scores in Champaign Challenger
- Jeff WolfWolf – Vasil KirkovKirkov (6-3 6-2) – See score progression
- Yosuke WatanukiWatanuki – Ben SheltonShelton (6-2 6-1) – See score progression
- Aleksandar VukicVukic – Go SoedaSoeda (6-2 6-2) – See score progression
- Stefan KozlovKozlov – Mitchell KruegerKrueger (6-4 6-4) – See score progression
- Alexis Galarneau/Nicolas MejiaGalarneau/Nicolas Mejia – Jc Aragone/Robert GallowayAragone/Robert Galloway (6-4 4-6 10-8) – See score progression
- Nathaniel Lammons/Jack WithrowLammons/Jack Withrow – Gijs Brouwer/Reese StalderBrouwer/Reese Stalder (6-4 7-66) – See score progression
- Stefan KozlovKozlov – Mitchell KruegerKrueger (6-4 6-4) – See score progression
Upcoming matches in the draw
- Yosuke WatanukiWatanuki – Aleksandar VukicVukic (1-0) – H2H and prediction
- Jeff WolfWolf – Stefan KozlovKozlov (3-3) – H2H and prediction
