Step 1: Understanding the Concept:
The four Grand Slam tennis tournaments are defined by their unique playing surfaces, which fundamentally alter ball bounce, speed, and player movement.
Step 2: Detailed Explanation:
Each tennis Major features a different court classification:
• Australian Open: Played on outdoor Hard courts (GreenSet surface).
• French Open (Roland Garros): Played on Clay courts (crushed brick over limestone).
• Wimbledon Championships: The oldest tennis tournament in the world, traditionally played on outdoor Grass courts (100% Perennial Ryegrass).
• US Open: Played on outdoor Hard courts (Laykold surface).
Step 3: Final Answer:
The Wimbledon Championships is the Grand Slam tournament played on grass courts.