Gregorio Sierra Perez (Grego Sierra) is a defender ( centre back ) player born 05-Mar-93 in Spain. In the last 30 days Grego Sierra played 450 minutes in 5 games of 9 in this period, all of them in starting lineup. Received 2 yellow cards and did not score goals. Grego Sierra received an average punctuation of 3.6 stars during this period, having successfully completed 168 out of 194 (87%) passes.