In tennis, a Hold or Hold Serve means winning a game when a player is serving.
It's when the server successfully defends its service game against the returner. Holding serve is important for maintaining control in a match.
Players aim to hold all their service games. Losing a service game is called being "broken".
Holding serve puts pressure on the opponent to do the same. In professional matches, players often win by holding serve and breaking their opponent once. The ability to hold serve can be crucial in tight matches.