Williams pair Valtteri Bottas and Felipe Massa were left to lament on a tough weekend for the squad as neither driver scored points in Monaco.
Bottas' two stop strategy failed to bear fruit as he took 14th place, while team-mate Massa was involved in a collision at the start which restricted him to 15th.
"This has been a tough weekend that ended in an even tougher race," said Bottas.
"We tried everything to try and get some points but with the pace we had it wasn’t possible today. We tried the two-stop strategy which never really came to us, with the safety car coming at just the wrong time.
"There are not too many positives from the weekend but plenty we can learn from as to why we struggled. We know we still have a good car and go to races in the next few weeks where we should be able to demonstrate our true performance."
"My race was effectively over in Turn 1, with another car pushing me over and I was left with a lot of damage to my tyre and front wing," added Massa.
"The pit stop I had to make on Lap 1 put me right at the back of the pack and I spent the rest of the race looking out for blue flags."