They get a 4-3 win over the Rockies in the regular-season home finale.
Weatherspoon, a former assistant with the NBA’s Pelicans, has been in talks with the Sky since at least August.
After one of the most damaging weeks the franchise has witnessed in years, the team was blown out 41-10 by the defending Super Bowl champs.
Fields had a 12.5 passer rating at halftime, while Patrick Mahomes left in the third quarter with a 41-0 lead.
“Sitting on the bench watching the game for six to nine innings, it’s easy to stay engaged when we’re playing the type of baseball we’re playing,” Crow-Armstrong said.