Randall Alvarado's 12th-minute goal would be enough for Wright's men to take all three points from their trip to the Estadio Jose Rafael Fello Meza on Sunday.
Cartagines sit second in the standings - two points behind leaders UCR - but have a game in hand.
Wright, however, said his side "had two clear chances, incredibly we could not finish them".
With custodians Luis Torres (hernia) and Wardy Alfaro unavailable, Wright said he was "blessed" to have the services of 25-year-old Gomez in goal.
Ariel Contreras, Allan Duarte and Victor Coto were all on the scoresheet for Jose Antonio Giacone's men.
However, Antonio Salazar's goal with three regulation minutes remaining earned a point for Santos, who sit fifth in the table with 10 points - goal difference behind third-placed Deportivo Saprissa.
