70-year-old Harry Redknapp has been sacked as Birmingham City following six straight defeats in all competitions.
He took charge of the club with three games remaining last term, winning the final two to avoid relegation from the Championship on the final day.
The former Tottenham and Portsmouth boss then signed a one-year deal in May to stay on as Blues boss.
Former Blues midfielder Lee Carsley has been placed in temporary charge.
Redknapp’s assistant Kevin Bond has also left St Andrew’s, but coaches Paul Groves and Kevin Hitchcock are set to stay.
A Blues statement said: “Unfortunately due to the poor start to the campaign which sees the club second from bottom of the Championship, we are left with no choice but to terminate the contract of the manager with immediate effect.
“We thank him for all his efforts and wish him good luck for the future. There will be no further comment at this time.”
Saturday’s 3-1 home loss to Preston was the ex-West Ham and QPR boss’ final match in charge of the Blues.
Redknapp initially worked without asking for payment from Blues for the final three games of 2016-17, having replaced Gianfranco Zola.
Birmingham are 23rd in the table after their first eight league games, above only winless, newly-promoted Bolton Wanderers.
Carsley, 43, who was previously head coach at Brentford on an interim basis in 2015, steps up from the role of development squad manager at Birmingham.
Redknapp had replaced Zola 16 hours after the Italian’s resignation in April, following the Blues’ dismal run of two wins in 24 matches under the former Chelsea forward.
When Gary Rowett was sacked in December, Blues had been seventh in the table, outside the play-off places only on goal difference, but they narrowly survived relegation on the final day thanks to a 1-0 win at Bristol City.
Birmingham’s next match on Saturday, 23 September is away to Rowett’s current side, Derby County.