Fernando Alonso's retirement from the Canadian Grand Prix was the biggest nail yet in the coffin of McLaren's doomed relationship with Honda.
With the Spaniard running 10th and on course to claim the team's first point of the 2017 season at Circuit Gilles Villeneuve, an oil pressure issue two laps from the finish proved any optimism to be misplaced.
The partnership between the once-great McLaren team and Honda has taken a sizeable and undeniable step in the wrong direction this season.
After finishing ninth out of 10 in the constructors' standings in the first year of the deal in 2015, a more promising 2016 saw the team finish sixth.
However, Alonso has crossed the chequered flag in just one race so far this season, while team-mate Stoffel Vandoorne has managed three finishes in seven rounds.
Even Alonso's bid to escape the underperformance of his F1 car was haunted by its failings - the Honda he drove at the Indy 500 suffered engine failure 21 laps from the end.
A driver of Alonso's talent and popularity - highlighted by his venture into the stands after pulling up on Sunday - will have plenty of offers to move elsewhere and he has not ruled out a permanent switch to IndyCar as he grows increasingly frustrated.
McLaren executive director Zak Brown conceded to having "serious concerns" about the current state of affairs ahead of Sunday's race in Montreal and those worries will only have grown deeper over the weekend.
For a team who only five years ago were regularly winning grands prix, the level of disappointment at missing out on a single point is a stark indicator of just how grave the situation has become at McLaren.
"We dared to hope", said racing director Eric Boullier after the race, speaking as if his team were chasing silverware, not scraps.
"OK, what we were daring to hope for were hardly rich pickings: a solitary world championship point for Fernando, who had driven superbly all afternoon, as he's driven superbly every race-day afternoon for the past two-and-a-half years.
"But, after so much toil and heartache, even that single point would have felt like a victory.
"And then came yet another gut-wrenching failure.
"It's difficult to find the right words to express our disappointment, our frustration and, yes, our sadness. So I'll say only this: it's simply, and absolutely, not good enough."
McLaren are considering their options regarding engine suppliers for the 2018 season, and a return to Mercedes power is thought to be under consideration.
Whatever the way forward, Honda's chances of being retained are diminishing with every passing race.
22 de febrero 2018
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|Simeone open to Carrasco, Torres exits amid CSL reports|
|Mancini: Zenit not Europa League contenders|
|Confident Kerber enjoying ´fresh start´ after downing Pliskova|
|Honda Classic grind ´like playing a British Open´, says Woods|
|Europa League Review: Napoli´s comeback in vain, Immobile sends Lazio through|
|Ferdinand has doubts over Kane´s Tottenham future|
|Zenit 3 Celtic 0 (3-1 agg): Ivanovic inspires second-leg turnaround|
|Atletico Madrid 1 Copenhagen 0 (5-1 agg): Gameiro ensures Simeone´s men cruise through|
|Six Nations 2018: Owen Farrell ´jumping out of his skin´ to face Scotland, Eddie Jones says|
|Why De Gea really is untouchable as the Premier League´s best goalkeeper|
|Woods, Thomas start strong at Honda Classic|
|Farrell ´jumping out of his skin´ to face Scotland, says Jones|
|I wouldn´t sell him - Arbeloa wants Bale to remain at Real Madrid|
|Two Grand Slams and 2,253 points scored - Gatland´s 100 Wales matches in Opta numbers|
|Leeds United delay reveal of new club crest|
|Guti urges Neymar to leave PSG for Real Madrid|
|Bottas: I can beat Hamilton to F1 title|
|Vettel and Ferrari ´fired up´ for 2018 after unveiling SF71H|
|Azpilicueta: Chelsea must be perfect to beat Barcelona|
|Rai´s big finish ensures three-way tie in Qatar|
|Roma star Under tipped to win Ballon d´Or before 2023|
|WATCH: Snedeker splashes around for a soggy six at Honda Classic|
|Hamilton says Vettel rivalry ´could be worse´ in 2018|
|Zola denies he will join Sarri at Chelsea next season|
|Barcelona is my club - Sergi Roberto rejects other interest to sign new deal|
|Lewandowski employs Zahavi as agent as Real Madrid rumours continue|
|If you gave me a chainsaw I´d take it off - Wolff not keen on halo|
|Farrell and Porter among five Ireland changes|
|Pardew confirms Evans remains West Brom captain|
|Muntari joins Seedorf at Deportivo La Coruna|
|F1 champs Mercedes launch new W09|
|Wigan coach Wane ponders Hardaker lifeline|
|Hamilton hopes for pre-season contract resolution|
|Winter Olympics 2018: Joy for Gisin, Hirscher´s woe and record-breaking win for Wu|
|Rooney: Moving to China for the money would have been easy|
|Carrasco left out of Atletico squad amid China move reports|
|Arthur: Move to Barcelona still on track|
|Blatter backs Morocco 2026 World Cup bid|
|Moeen backs Rashid, Hales white-ball decisions|
|Wenger sees Welbeck emerging from torrid struggles|
|Zidane stands by selfless Benzema|
|Sodhi earns New Zealand ODI recall|
|´Important names´ keen on Inter star Icardi|
|Hughes returns in only England change|
|Manchester United v Chelsea: Mourinho and Conte´s feud in their own words|
|Manchester United v Chelsea: Grant´s disastrous debut, Drogba´s ´offside´ goal and other Old Traffor|
|Walker motivated by EFL Cup final showdown with Arsenal|
|Manchester United v Chelsea: ´Specialist in failure´, eye-pokes and Mourinho´s other best rows|
|CONCACAF Champions League Review: America close in on quarters with huge win|
|Keane defends Pogba as former United captain demands more from Lukaku and Sanchez|
|Stoger labels Reus ´indispensable´ amid Milan links|
|Ferdinand and Man United team-mates doubted De Gea|
|Sock, Isner and Raonic crash out at Delray Beach|
|Rain sees Cilic-Monfils suspended at crucial stage|
|Djokovic steps up rehab as Federer leads the way|
|Cuban fined $600K for tanking comments|
|Fowler says PGA National demands full attention|
|Rory McIlroy curbing expectations before Masters|
|Shakhtar would´ve won by more if not for Roma´s Alisson – Fonseca|
|Popovich would be ´surprised´ if Leonard returns for Spurs this season|
|Championship Review: Wolves squander two-goal lead to Norwich, Cardiff City take advantage|
|Mourinho happy with ´big effort´ from Pogba|
|Benneteau ousts Bautista Agut in Marseille|
|Mourinho questions medical staff after ´bad´ Herrera injury|
|Sarri demands better from Napoli ´buffoons´|
21 de febrero 2018
|Mourinho hugs reporter for asking about McTominay instead of Pogba|
|Di Francesco slams Roma: I should have substituted half of them!|
|Curtains for Konta and Ostapenko in Dubai|
|De Gea happy with ´important´ wonder save|