The Frogs bounced back from their 2-0 loss to Deportivo Alaves last weekend with an emphatic victory away win at the Abanca-Balaidos.
A brace from Jose Luis Morales and lone efforts from Coke and Borja Mayoral handed the visitors three points as they moved to 12th in the La Liga table.
The encounter was the first time Simon played full 90 minutes in the Spanish top-flight and the Nigeria international has vowed to keep working hard.
"Thank you Lord for the victory, it was a good fight from the team. We will keep working hard and make the fans proud," Simon tweeted.