Sunderland's defensive strategy is one of waiting for counter-attacks, which has been the foundation of their success in recent years.

The team has always been known for their strong defense and their ability to hold onto the ball for long periods of time. This has allowed them to create scoring opportunities through set-pieces and crosses from deep.

Their defensive tactics have also helped them to maintain a high level of discipline on the pitch, with only two red cards being issued in their last seven games.

One of the key aspects of Sunderland's defensive strategy is their willingness to sit deep and absorb pressure. They do not rush into tackles or play too aggressively, which allows them to control the tempo of the game and dictate the flow of possession.

This approach has also helped them to limit the number of mistakes they make, as they tend to be more cautious when defending than other teams.

Another aspect of Sunderland's defensive strategy is their emphasis on teamwork. The players work together well as a unit, and this helps them to stay organized and prevent opponents from creating clear-cut chances.

Overall, Sunderland's defensive strategy is a combination of patience, discipline, and teamwork that has led to their success in recent seasons. By waiting for counter-attacks, they are able to create scoring opportunities for themselves while minimizing the risk of conceding goals.