The 2012/2013 season of Sparta Rotterdam was the 58th year in Dutch professional football for the club from Rotterdam. The club played in the Eerste Divisie and participated in the tournament for the KNVB cup.
Trainer coach Michel Vonk was fired on April 2, 2013, a day after the 0-1 home loss against FC Emmen, and was replaced by Henk ten Cate. Under his leadership, Sparta finished in third place in the final ranking, but the team again stranded in the playoffs. In the decisive game, on May 26, 2013, Roda JC managed to save on his own field. After the goalless draw on Spangen, the Limburgers won 2-1 in-house, which extended the stay in the top division.
Sparta took the lead halfway through the first half via Mario Bilate. The attacker had been preferred by Ten Cate over top scorer Sandro Calabro. After the break, Sparta held up relatively easily. Goalkeeper Nico Pellatz was hardly tested. In the 63rd minute, Roda coach Ruud Brood brought his pinchhitter Frank Demouge into the field. The striker had missed the first leg because of a hamstring injury.
But the Limburg hero of the afternoon became Mark-Jan Fledderus. The midfielder shot the ball from a free kick over the wall into the Sparta goal after 73 minutes. In the last minute, Fledderus signed for the bizarre escape from his employer. Again he scored from a free kick, surprising Pellatz this time by not shooting across the wall: 2-1.
In the cup tournament, Sparta lost to Premier League player Heracles Almelo in the third round: 2-0. Top scorer of the season became center forward Sandro Calabro with 19 goals.