Yes, but before that, it was tough for Schwarz.Mezencev showed the blueprint how to beat Schwarz but he lacked the stamina in the end and that is why he lost.
Like how he's being fast tracked, just like his older brother was. No need to take things slow when you have that kind of amateur pedigree/experience.
That was an excellent fight... And a rarity today, when was the last time two young HW prospects face one another? I actually rate Mezencev a lot more than Schwartz, good hand speed and combination punching. Massive holes in his footwork and defense though, way too stiff and upright. But his ceiling is definitely higher than Schwartz.