Among Pep Guardiola's successes at Manchester City is his conversion of Raheem Sterling.
The Englishman has gone from being a talented but frustrating winger into a lethal weapon.
"He's helped me to improve," Sterling has said of Pep.
"He's asked me to be more direct, to create more chances. I learn every day.
"Pep gives me advice for small details such as rhythm and position, to drive the ball or control it in a certain way."
In his four years and 129 games at Liverpool, Sterling scored 23 goals and provided 25 assists. His first year at City returned 11 goals and 10 assists, but Guardiola's arrival changed him in 2016/17.
He scored 10 and assisted 20 in 2016/17; 23 and 17 in 2017/18; 25 and 18 last season; and this term he has 13 goals and seven assists already.
"He's so fast that he's unstoppable," the coach said.
"He understands the game, creates chances, he's aggressive, he's always there."
Atalanta are next up for City, with Sterling looking to bulk up his numbers further.