Sports Referee Giving Thumbs-Up Signal - Official Gesture Guide #232851 (License: Personal Use)

This black-and-white line illustration depicts a sports referee wearing the classic vertical-striped shirt, cap, and belt, signaling approval with a raised thumb while holding a whistle in the other hand. The pose reflects a standard non-verbal communication used to confirm a valid play, acknowledge player compliance, or indicate readiness to resume action. The image emphasizes clarity and authority in officiating gestures.

Used on sports education sites, coaching resources, rule explanation pages, or referee training materials to illustrate official signals; matches user intent for understanding sports officiating cues or visual reference for instructional content.