Centre-backs are often tall, strong and have good jumping, heading and tackling ability. Successful centre-backs also need to be able to concentrate, read the game well, and be brave and decisive in making last-ditch tackles on attacking players who might otherwise be through on goal. Sometimes, particularly in lower leagues, centre-backs concentrate less on ball control and passing, preferring simply to clear the ball in a "safety-first" fashion. However, there is a long tradition of centre-backs having more than just rudimentary footballing skill, enabling a more possession-oriented playing style.