After being spotted in the stands for the Europa League semi-final between the Colchoneros and Arsenal, the tennis explained his choice of attire
Real Madrid fan Rafael Nadal says he only wore an Atletico Madrid shirt because he was cold.
Tennis world number one Nadal was pictured at the second leg of Atletico Madrid's Europa League semi-final against Arsenal.
Diego Simeone's men won 1-0 to book a final clash against Marseille, but Nadal's presence at the Wanda Metropolitano - wearing an Atletico shirt around his neck - raised eyebrows.
The Spaniard, set to begin his Madrid Open title defence on Tuesday, attended the game as a guest of Atletico's president Enrique Cerezo.