Group 1 - The Wimbledon Championships will commence on June 30, 2025, in London, attracting significant attention from fans [1] - Different court surfaces in tennis include hard, clay, and grass, each affecting player performance and equipment choices [1] - Grass courts, used in Wimbledon, feature faster ball speeds and irregular bounces, making serve-and-volley play a key strategy [1] Group 2 - Grass courts are maintained with 100% ryegrass at a cutting height of 8mm, which involves high maintenance costs and strict regulations [1] - Clay courts are composed of layers of crushed brick and limestone, resulting in slower ball speeds and longer rallies, favoring players with strong endurance and movement skills [1] - Hard courts are the most common type, built with asphalt or concrete, and can be adjusted for different ball bounce heights and speeds, with Australian Open being slower and US Open being faster [2]