Tennis tactics refer to the strategies employed by players to gain an advantage over their opponents. The two most common tactics used in tennis are LOBS and topspins. A lob is a shot that is hit high and deep into the opponent's court, making it difficult for them to return. Topspins are shots that are hit with a lot of spin, causing the ball to dip quickly and bounce higher than expected. Both of these tactics can be used to surprise and outwit the opponent, giving the player an edge in the match.