After the 2010 Olympics Ovechkin had 20 points in 18 games. Prior to them he had 89 in 54, a 134 point pace - by far the best of his career. His next season he barely outscored 40 year old Teemu Selanne being 7th in scoring and the season after that he wasn't even a point per game despite being a 27 year old generational forward.
Moreover, he has never looked the same physically at all since his age 25 season despite being a generational player. That's just weird, man. There's not a single example in hockey you can point to that had that career arc. It's cool that he found a way to score goals with such consistency, but it's definitely weird that he lost his explosiveness just like that. That's like if McDavid lost a step 3 years ago.