Paul Dipre resigned as Carshalton Athletic boss because he did not trust his managerial ability to improve the Robins' poor start to the season.
Currently third from bottom in the Ryman League Premier Division without a win to their name, the Robins' early exit from the FA Cup on Saturday at home to Chalfont St Peter was the last straw and Dipre told his players of his decision on the pitch after the final whistle.
Dipre, who will stay on as owner of the club, took over as manager in March last year. League results did not improve under his tenure although he did lead them to a FA Trophy second round win over Lincoln City.
First team coaches Ian Hazel and Tommy Williams will take charge of first team affairs until a replacement is appointed.
Dipre said: “I made the decision while on a break last week. I had to face the fact that we had played six league games without a win, we were struggling to score goals and I was unconvinced about my ability to turn things around.”
The season had started with great expectations after some high-profile signings but it was a lack of scoring goals that contributed to the dropped points.
Dipre brought in defenders Alton Thelwell and Tony Sinclair to cover for the last minute move by centre back Ryan Tafazolli to Mansfield and injuries to David Ray, Justyn Roberts and Michael Kamara.
However, after two creditable draws against Bury Town and Lewes, team performances slackened.
Dipre said: “I had high hopes for the season but things haven’t worked out and we have underperformed in the five of the eight games we have played.