Diego Simeone believes the January introduction of Diego Costa into the Atletico Madrid first team has helped Antoine Griezmann move to the next level with an extraordinary period of goalscoring form.
Griezmann struck all four goals in a 4-0 defeat of Leganes in La Liga on Wednesday, following up his treble in a 5-2 win at Sevilla four days earlier.
The France international brought up 100 Atletico goals in all competitions with his first of the game before going on to reach 15 La Liga strikes for the term, with only three players more prolific this season - Iago Aspas, Luis Suarez and Lionel Messi.