Manor drivers Pascal Wehrlein and Rio Haryanto were left to rue a "tough" Monaco Grand Prix as the pair came home as the last classified runners.
Wehrlein originally placed 13th but was demoted behind Haas' Romain Grosjean after he received two 10-second time penalties.
Wehrlein was deemed to have transgressed during the Virtual Safety Car period and then ignored blue flags, the sanctions demoting him to 14th spot.
"It was quite tough to be honest," said Wehrlein of his first Monaco Grand Prix.
"Early on in the race, with the track staying quite wet, we decided to stay out on the extreme tyre and run longer.
"With other cars pitting earlier onto the Inters, we had track position and when we did stop we actually managed to jump some cars. So that strategy worked perfectly.
"We were able to keep the Haas behind until the chequered flag but with the penalties the race got away from us and we dropped behind. It’s disappointing, but going into the race 14th might have looked like a good result."
Haryanto finished in 15th spot, albeit two laps adrift of team-mate Wehrlein.
"[It was] a difficult race," he commented.
"Obviously the first part was quite tricky for everyone with the wet conditions but actually when the race got underway I was able to keep pace; the first two stints were okay for me.
"Then, towards the end, there was a lot of traffic and under the blue flags I was struggling to keep temperature in the tyres, so I was losing lap time."