Ditewig started his career at
SC Heerenveen, and later played two seasons for
FC Emmen. After the two seasons in
Drenthe and a short spell at amateur club SC Joure, he went to play five successful seasons for
BV Veendam where he was the first goalkeeper. However, in 2009, he was told that his contract would not be extended. He chose to play for
Team VVCS, a team that tries to earn players without a contract another club. After some good performances,
ADO Den Haag, whose had trouble finding keepers, chose to sign Ditewig. In 2010, Ditewig signed with
Achilles '29, an amateur team playing in the
Topklasse, the new third division in Dutch football. Ditewig won in his second season this Topklasse and the title of best amateur club of the Netherlands against
SV Spakenburg with 3-0 and 0–2. In 2016, Ditewig moved to
MVV Alcides. From the 2018–19 season he played for
ONS Sneek. He retired from football in September 2019. ==Outside football==