Former Chelsea midfielder Cesc Fabregas laid bare the tactical differences between Arsenal and Chelsea as the Gunners cruised to a 3-1 Premier League victory.
Arsenal were all but out of sight by the break, with Martin Odegaard scoring twice and Gabriel Jesus adding a third, and Chelsea boss Lampard took off former Arsenal star Pierre-Emerick Aubameyang before the restart. Noni Madueke pulled one back - just the second goal Chelsea have scored since Lampard's return - but it wasn't enough.
The former Blues midfielder took temporary charge in April after Graham Potter was dismissed just a few months into his tenure. However, defeat at Arsenal on Tuesday made it four defeats from four in the league, while Chelsea also lost both legs of their Champions League quarter-final against Real Madrid, with Fabregas showing the gulf between Lampard and opposite number Mikel Arteta.