Possible Clues:

• Eg, football
• Magazine's not the kind that covers principally professional football, say
• Just you watch it ... don't be a part of their game
• Observed action of opponents in court, say, with appeal
• Weekly magazine's laid on wine for Wimbledon tennis perhaps
• For example, football magazine's left on board
• Gate left in horse-racing maybe
• Sun's taken on Left supporting magazine -- there's something to watch
• Harry Potter actor's retaining betting for Quidditch, say?
• Magazine's left something for fans to enjoy looking at