Mainz continued their perfect start to season as Cologne edged to victory in Sunday's action.
Mainz move into second spot while Cologne claim first points
Mainz made it three wins from three Bundesliga matches as they battled back to claim a 2-1 victory over local rivals Kaiserslautern.
Having trailed to Srdjan Lakic's first-half strike, the hosts rallied from a poor first half and equalised through Niko Bungert in the 71st minute.
Substitute Andre Schurrle produced the winner as he latched onto Eugen Polanski's cross to sweep the ball home with an impressive first-time finish, maintaining his side's 100% record and sparking wild celebrations among the 20,000 crowd.
In the only other match on Sunday, Cologne got their first points of the season as they edged past St Pauli 1-0 thanks to a Taner Yalcin goal.
The midfielder volleyed home after Lukas Podolski had rattled the post with a fierce left-footed drive from 20-yards.