Bundesliga side Hoffenheim was on the receiving end of a huge shock in the first round of the DFB-Pokal as Berliner AK ran out a 4-0 winner.
The victory - the biggest ever in this competition by a fourth-tier side against top-flight opposition - was as good as sealed by the interval as the host quickly moved into a 3-0 lead.
Cakmak's second of the match completed an amazing rout as Hoffenheim failed to find any response after the break.
There were no such problems for reigning Bundesliga champion and current DFB-Pokal holder Borussia Dortmund, which was a comfortable 3-0 winner over Oberneuland.
Borussia Monchengladbach was a 2-0 winner over Alemannia Aachen,
Stuttgart was also a 4-0 winner, against Falkensee-Finkenkrug, thanks to goals by
Freiburg was made to work harder before booking its place in round two with a 2-1 win at Viktoria Hamburg.
Duisburg was a 1-0 winner over Hallescher, St Pauli defeated Offenburg 3-0 and Cologne was a 2-1 winner at Unterhaching.
Bundesliga newcomer Greuther Furth suffered a first-round exit as it was beaten 2-0 by Kickers Offenbach.
The 3.Liga side took a first-half lead through Thomas Rathgeber's penalty and Lars Bender added a late second as Greuther sought an equaliser.
Wolfsburg swept aside Oberliga minnow FC Schonberg 5-0 with the aid of an Ivica Olic hat-trick.
Diego, back from a loan spell with Atletico Madrid and desperate to prove his worth to the Lower Saxony faithful after a controversial first season with the club, and northern summer signing Bas Dost were also on the scoresheet for the Wolves.
Zlatko Dedic scored both goals as second-tier VfL Bochum beat Heidenheim 2-0.
After the disappointment of the DFB-Pokal semi-final exit to Stuttgart, Freiburg returns to the very same stadium on Monday (AEST) hoping for a "bonus" to what coach