Complex sentence: On 6 January 2013 Prieto netted the first hat-trick of his professional career, but in a 3--4 loss at Real Madrid: he scored once through a penalty and twice after one-on-one situations against Iker Casillas.
Split into simpler sentences: On 6 January 2013 Prieto netted his first hat-trick of his professional career in a 3--4 loss at Real Madrid. He scored once through a penalty and twice after one-on-one situations against Iker Casillas.