Frank Lampard accused his Chelsea flops of complacency after they blew the lead in Saturday's FA Cup final defeat against Arsenal.
Lampard's side made the perfect start at Wembley in London as Christian Pulisic fired them ahead.
But Arsenal captain Pierre-Emerick Aubameyang equalized from the penalty spot before half-time and made it 2-1 with a fine finish after the interval.
Lampard had tried to get his players to refocus, but he conceded Chelsea have been hampered by a lack of cutting edge and defensive mistakes all season.
They weren't helped by the extremely harsh second half dismissal of midfielder Mateo Kovacic and injuries to Pulisic and Cesar Azpilicueta.
Denied his first trophy as Chelsea boss, Lampard couldn't hide his frustration.
Despite their Cup final misery, Chelsea had already achieved their main aim by qualifying for next season's Champions League via a fourth place finish in the Premier League.
Lampard's season isn't over as Chelsea travel to Bayern Munich on August 8 for the second leg of their Champions League last 16 tie.
But the Blues trail 3-0 from the first leg and Lampard did not want to think about that daunting task just yet.