This is book number 1 in the Tristan Strong series.
Tristan Strong is a book about memory & storytelling, a clever reimagining of African & black American mythology, & a fun, fast-paced ride! Boxer Tristan feels he's failed his best friend & let down his family. When he accidentally punches a hole to another world, he'll have to rediscover his strength as he fights alongside legends like John Henry, Brer Rabbit, & Anansi. Tristan's voice is tough, tender, & hilarious; his story will appeal to adventure lovers of all ages.
Kate
— From Tristan Strong Punches a Hole in the Sky