Everything about him is underplayed (is that the word?). It grows on you. I like it.
'Understated' would be the most accurate one but near enough.
Everything about him is underplayed (is that the word?). It grows on you. I like it.
'underestimated' also a possibility.
Depends what he is trying to say about Valverde. Saying he is 'underestimated' or saying he is 'understated' mean completely different things.
First is others opinion of him, second is his behaviour.
Everything about him is underplayed (is that the word?). It grows on you. I like it.