Sports Crate: MLB Edition Diamond Crate April 2019 Theme Spoilers + Coupon! Last updated by Hello Subscription on April 3, 2019. Subscription Box News / Sports Crate: MLB Edition Spoilers Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification Loot Crate has revealed the theme spoilers for the April 2019 Sports Crate: Diamond Edition box! The theme this month is OPENING DAY! DEAL: Save 30% off your subscription. Use coupon code SPORTSCRATE30. What do you think of the Sports Crate spoilers this month?