Dani Pinillos started the match at the Keepmoat Stadium, a 22-year-old left-back from Spain.
Pinillos played in La Liga for Cordoba last season but was released after their relegation.
He played 75 minutes of the game in South Yorkshire before being replaced by Danny Fox with the score at 1-1, Chris Burke netting the Reds' goal.
Update: The game ended 1-1 and Freedman was pleased with the performance of his side and says that his pre-season is 'going to plan' with the side that he chooses to take on Swansea City this Saturday set to be close to the one that starts the league season at Brighton.