Broadcast saw a 22 in The Crucible (6)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

definition: The Crucible is a venue for snooker, and in snooker a spider [wiki] is a type of 'rest' to support the cue when in awkward positions sounds like ('Broadcast'): 'spied a' = "saw a"