Luton Town handed Hull City a sixth Championship defeat of the season, sacking manager Shota Aroladze just hours before kick-off.
Andy Dawson was named interim head coach and took charge of the team but conceded after six minutes through an own goal from Alfie Jones.
Regan Slater hit the bar for the hosts as they pressed for an equaliser, but Henry Lansbury hit low from distance for Luton’s second before the break.
Hull offered little in response in the second half, as Luton scraped away victory and moved up to fifth in the table.
Arveladze was appointed as Grant McCann’s replacement in January and guided the Tigers to safety and a 19th-place finish in the Championship last season.
Before his sacking, Hull were on a run of four consecutive defeats under the Georgian side and were 20th in the table with just three wins from 10 games coming into the trip to Luton at the MKM Stadium.
Assistant head coach Peter van der Veen also left the club with immediate effect on Friday, leaving Dawson to take over the team hours later.
Dawson made three changes to the team that were beaten 3-0 by Swansea on 17 September, but endured the worst possible start as Jones converted into his own net after Elijah Adebayo had hit the bar.
Despite going into the game after conceding, Hall went 2-0 down at the break after Lansbury’s sensational strike from outside the box.
There was to be no comeback for Hull, however, as Luton defended well in a routine second-half performance to protect their lead.
Hull City interim head coach Andy Dawson told:
“I found out this morning. I spoke to Shota and he was honest and open. We send our regards to him and Peter van der Veen, they are two wonderful people.
“We prepared through the international break. We and the boys worked hard, they looked fit and strong and ready to go into the game tonight and then this morning. But that’s football. Nothing really surprises you and you need to adapt quickly.
“The team has been a bit of everything. It’s been a conversation over the last few days and this morning. The lads have thought a lot about the gaffer and Peter so it’s about getting them in the right frame of mind. .
“I thought we were a bit loose in the first goal. After that, a man down, they were out of control and brave to get the ball. They went to the end. We could have had a bit more innovation in the final third. But it’s something we can work on.”
