The manga comes from writer/artist Yuji Terajima who began the work back in 2006 in Weekly Shonen Magazine.
We learned last November that the Ace of Diamond manga from Yuji Terajima is coming back for another anime run in 2019 as it adapts the Ace of Diamond Act II manga.
All the emotion and excitement of the popular baseball manga is, at last, coming to television in the form of an anime!