Both players made Opta's European Team of the Week after helping keep Tottenham out in a 1-0 for Arsenal at White Hart Lane.
The two were in quite astonishing form. Mertesacker made a barely believable 20 clearances in 90 minutes, with Koscielny not far behind with 15.
The Frenchman also cleared one off the line and won nine duels, while Mertesacker only lost one of eight aerial duels himself.
For Opta's full reasons for each player's inclusion, see the table below the team graphic...
- Sports & Recreation
- Laurent Koscielny