Chelsea manager Roberto Di Matteo has fingered Arrigo Sacchi as a big influence on his coaching style, and thus a secret behind the club's recent FA Cup and Champions League success.
The Italian tactician has taken bits and pieces from various coaches he has played under, bringing together a style of play which seeks to combine the natural defensive mentality learned in his homeland, with flair and a willingness to attack.
Having been fortunate enough to work under some of the game's greatest managers, Di Matteo spoke of how they have each helped him establish his own voice as a head coach at Stamford Bridge.
"Arrigo Sacchi in many ways," he told Chelsea's official site. "Dino Zoff was my first manager at Lazio, I had a Swiss coach, Rolf Fringer, who became national team coach, and Ruud Gullit here in England."
Di Matteo - who quickly achieved something most coaches never do, by winning the European Cup last season - is also clear that he has assembled a first rate backroom staff at Chelsea, who are collectively responsible for their recent achievements, as well as helping push the club forward.
"We've a good understanding among the technical staff," explained the Blues boss, pointing to Steve Holland and Eddie Newton. "They are very supportive and both have good knowledge of the game.
"We've developed a strong trustworthy group, and we have [conditioning coach] Chris Jones and [goalkeeping coach] Christophe Lollichon with us as well, so I'm happy with the management staff."
Chelsea currently sit top of the Premier League, having enjoyed an exceptionally strong start to the 2012/13 campaign, with 19 points from seven games.