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 junio 2018
|Assistant Farbrace to take charge of England for T20 games|
|Hummels hoping to be fit for Sweden clash|
|Hend surges clear as Fleetwood struggles again in Pulheim|
|Giant-killers Mexico embrace sudden weight of expectation|
|Roma complete €17.25m Kluivert deal|
|Pakistan name strong group for Zimbabwe tour|
|Choc Horror: Boullier insists McLaren do not hand out Freddos as bonuses|
|Neymar: Not everyone knows what I went through|
|Poland v Colombia: No time to dwell on regrets, warns Aguilar|
|Musa shows Messi how it´s done to set up critical Argentina showdown|
|Nigeria 2 Iceland 0: Musa brace boosts Super Eagles & Argentina|
|McLaren and Renault open to Ricciardo talks|
|We must win, we have no other choice - Maaloul|
|Germany will respond against Sweden, insists Low|
|´The best among all Asians´, South Korea trust in Son against Mexico|
|Stalin´s bunker an unlikely site for Russia´s World Cup charm offensive|
|England v Panama: Rashford tipped to start as Southgate´s side aim for last 16|
|Erasmus wary of ´wonderful´ Cipriani|
|Hummels to miss Germany-Sweden, confirms Low|
|Murray accepts Eastbourne wildcard|
|St Petersburg madness lines up Neymar and Brazil with heroes of the past|
|Martinez happy to be ´boring Belgium´|
|Japan v Senegal: Squeaky clean Group H rivals eyeing huge step towards last 16|
|Argentina team the worst in history - Ardiles|
|Ravanelli upsets wife by taking Arsenal job...in Kiev|
|Federer moves a step closer to 10th title in Halle|
|Brazil 2 Costa Rica 0: Coutinho and Neymar score in stoppage time to snatch win|
|Andersson: Sweden embracing big occasion as bug sweeps through team|
|LeBron in ´good dialogue´ with Cavaliers|
|Ronaldo will always be the best, Fonte claims|
|Southgate criticises press for England team leak|
|O´Mahony: Series win in Australia would be up there with Grand Slam|
|Khedira thrilled with Can capture, staying with Juventus|
|Samuel open to Higuain-Icardi swap deal|
|It´s just a game - Milligan disappointed by Kruse criticism|
|From drug-testing lab to gastro pub: Sochi happy not to forget dark past|
|Ronaldo will do what is best for him, says Carvajal|
|Kohli: India will feel at home in England|
|Barca target Lenglet yet to decide future|
|Germany perform best under pressure, Klose claims|
|Juanfran signs one-year Atletico Madrid extension|
|Julian Nagelsmann: The remarkable rise of RB Leipzig|
|Sterling: my daughter is Liverpool through and through!|
|Van Bommel to take charge of PSV|
|Hansen urges France not to ´squeal´ over decisions|
|Intelligent Jones will turn England´s fortunes around - Moody|
|Nainggolan confirms imminent Inter transfer|
|U.S. Open missed cut may be blessing in disguise - McIlroy|
|Schmidt in no rush to decide on his future|
|Wallabies treating decider as grand final - Hooper|
|Salah won´t leave World Cup, Egypt FA boss claims|
|Chandimal, Hathurusinghe and Gurusinha admit ´serious´ conduct breach|
|Mikal Bridges´ 76ers dreams dashed in dramatic draft twist|
|They want to pull you down - Sterling hits out at tabloid press|
|Lazaridis wants West Ham to stick with Mexico star Hernandez|
|Get behind Sterling, urges Henderson|
|Sampaoli begs for Argentina´s forgiveness|
|The 2018 NBA Draft first round in full|
|Everything still to play for against ´very strong´ France, says Eriksen|
|Cubs bested by Harvey, Yankees sweep Mariners|
|Spurs GM: We´ll do what we can to keep Leonard|
|Lovren: This Croatia team are better than 1998 heroes|
|Internationals Musa, Okobo selected in NBA Draft|
|Modric is the world´s best number 10 – Arbeloa|
|Kurz stay crucial to Jakobsen´s Adelaide move|
|Nuggets end Porter´s slide at number 14|
|Argentina were crying like girls – Vrsaljko|
|Cavaliers select Sexton with number eight overall pick|
|Argentina must ´pray´ results go their way, says Mascherano|
|Grizzlies select Jackson with number four pick|