Following an injury suffered by first choice goalkeeper Michel Vorm on 27 October 2012, Tremmel started to have a run of games in the Swansea team for the first time. Swansea, now with Tremmel in the side, went on a seven-match unbeaten run that included memorable away wins at Liverpool in the League Cup, and Newcastle United and Arsenal in the Premier League. He also managed to keep clean sheets against the likes of Chelsea, Arsenal and Liverpool. These performances were met with praise from then-manager Michael Laudrup, who said, "Gerhard has done well and it is very important to know you have a goalkeeper of quality when things happen."