Coach DNA
Playing style
direct
Style consistency
More consistent than 62% of multi-club coaches
Club record
League results at each club since 2016, next to the same club under other coaches.
Reggiana
Aug 2024 – Mar 2025 · 32 matches
1.03 points per game in Serie B (31 matches).
Reggiana with other coaches, ±3 years: 1.16 (83 matches, 3 coaches).
Line-up Elo: −60 below the league average under him, −37 under the others.
Most used
- A. Meroni2,868' · Elo 1,726
- F. Bardi2,790' · Elo 1,804
- A. Sersanti2,541' · Elo 1,656
- A. Vergara2,113' · Elo 1,786
- M. Portanova2,077' · Elo 1,650
- L. Ignacchiti1,930' · Elo 1,725
- T. Reinhart1,851' · Elo 1,715
- L. Libutti1,835' · Elo 1,666
- L. Lucchesi1,646' · Elo 1,948
- M. Sampirisi1,565' · Elo 1,460
Cosenza
Nov 2022 – May 2024 · 38 matches
1.21 points per game in Serie B (38 matches).
Cosenza with other coaches, ±3 years: 1.02 (183 matches, 10 coaches).
Line-up Elo: −92 below the league average under him, −90 under the others.
Most used
- A. Micai2,577' · Elo 1,610
- A. Meroni2,485' · Elo 1,726
- I. Voca2,106' · Elo 1,561
- M. Brescianini1,962' · Elo 1,964
- M. Marras1,945' · Elo 1,669
- T. D'Orazio1,933' · Elo 1,336
- S. Väisänen1,750' · Elo 1,514
- A. Florenzi1,704' · Elo 1,543
- G. Calò1,652' · Elo 2,136
- A. Rispoli1,587' · Elo 1,277
Ascoli
Aug 2023 – Nov 2023 · 14 matches
0.92 points per game in Serie B (13 matches).
Ascoli with other coaches, ±3 years: 1.34 (147 matches, 8 coaches).
Line-up Elo: −60 below the league average under him, −26 under the others.
Most used
- Pedro Mendes1,125' · Elo 1,627
- E. Viviano964' · Elo 1,558
- G. Bellusci867' · Elo 1,572
- M. Falzerano816' · Elo 1,565
- Eric Botteghin807' · Elo 1,110
- F. Di Tacchio763' · Elo 1,526
- D. Quaranta741' · Elo 1,582
- F. Caligara740' · Elo 1,684
- Pablo Rodríguez729' · Elo 2,022
- S. Giovane722' · Elo 1,672
Players under William Viali
Total Elo change of his own players in his matches.
Rose most
- L. Marson+216
in 10 matches · Cosenza
- B. Bayeye+209
in 10 matches · Ascoli
- T. D'Orazio+202
in 24 matches · Cosenza
- M. Brescianini+188
in 28 matches · Cosenza
- P. Martino+182
in 21 matches · Cosenza
Fell most
- L. Cigarini−154
in 10 matches · Reggiana
- E. Viviano−121
in 11 matches · Ascoli
- R. Fiamozzi−95
in 20 matches · Reggiana
- M. Portanova−88
in 30 matches · Reggiana
- A. Vergara−88
in 30 matches · Reggiana
Opponents
Their Elo change in matches against his teams (at least 3 meetings).
Favourite opponents
−49G. Sibilli1713
in 7 matches · Sampdoria
−45I. Nedelcearu1619
in 4 matches · Palermo
−43F. Vázquez1655
in 3 matches · Cremonese
−42Ahmed Benali1540
in 5 matches · Bari
−38Ž. Majer1322
in 3 matches · Cremonese
Nemeses
+135A. Gabrielloni1567
in 3 matches · Como
+135S. Davì1653
in 3 matches · Sudtirol
+118R. Kofler1763
in 3 matches · Sudtirol
+104M. Venturi1638
in 3 matches · Cosenza
+98N. Pyyhtiä1706
in 3 matches · Sudtirol
Coaches
Their Elo change in matches against him (at least 3 meetings).
Favourite coaches
Hardly any coach lost Elo against him.
Nemesis coaches
- +41
Moreno Longo1790
in 4 matches · Bari
- +38
Roberto Breda1730
in 3 matches · Salernitana
- +29
Michele Mignani1677
in 4 matches · Cesena
- +16
in 4 matches · Brescia
- +10
Fabrizio Castori1637
in 3 matches · Sudtirol
Playing style
How William Viali's teams play vs league-season peers (2016+)
Descriptive — how a coach's teams play, not how good they are.
Career average
One shape blending all 2 clubs (2016+).
The baseline — each polygon on the right shows how one club's style deviates from this.
+0.29style consistency across 2 clubs
More consistent than 62% of multi-club coaches.
A high score means the same playing style travels from club to club — well above the random-coach baseline (-0.01), so it's a signature, not the squads.
Cosenza38 matches
Reggiana32 matches