Match ID 22221185. Every lane on my team seems to have easily countered their opposition. We kept a lead the entire game, lost almost no guardians at all, and they gave up and abandoned by the 17m mark (and I do not blame them!)
Of note, this immediately follows Match IDs 22215585 and 22211229, which were both flops on my teams' side. This in turn followed off 22206032, which was aggressively lopsided in favor of my team. So it looks at a glance like the game might be massively overcompensating for each match and sine-waving MMRs around; other teammates in the 22221185 game said they were experiencing the same thing.