Grego Sierra is a professional footballer from ESP and is currently 34 years old. He is on the books of Burgos CF and wears shirt number 8. His main role on the pitch is Defender. He measures 186cm in height and weighs 74kg. His stronger foot is Left. His estimated market valuation currently stands at 500K €.

His latest transfer saw him join Burgos CF from CS Universitatea Craiova via on 2025-01-21.

Across the Spanish Segunda Division 2025-2026, Grego Sierra appeared in 27 matches and averaged 1 tackles, 1.1 interceptions, 5.4 clearances, and 0 blocked shots per game.