Cagliari have made a surprisingly strong start to the Serie A season, at least when it comes to defending their goal. After six rounds, they concede just 0.50 goals per game, the lowest figure in the league. However, while the defensive numbers look impressive, a closer look at the statistics raises an important question: are Cagliari really that good defensively, or are they simply getting more out of their performances than they should?

Let’s look at the numbers. Cagliari lead Serie A in clearances, averaging 31.2 per game, while their goalkeeper makes 4.7 saves per match, the third-highest figure in the competition. They also rank fourth in interceptions with 10.2 per game and fifth in possession won, averaging 48.5. These numbers paint a picture of a team that is willing to defend deep, put bodies behind the ball, and do whatever it takes to protect its goal.

Cagliari’s defence looks excellent…at least at first glance

Conceding only 0.50 goals per game is an impressive achievement, but expected goals against (xGA) tell a somewhat different story. Cagliari allow 1.79 xGA per game, ranking 15th in Serie A in this category. In other words, the quality of the chances they concede suggests that they should be allowing considerably more goals than they actually do.

So, what explains the difference? Goalkeeping performances and crucial blocks have clearly played an important role in keeping the numbers down. Cagliari have been extremely effective at preventing opponents from turning their chances into goals, but maintaining such a gap between expected and actual goals conceded over an entire season is a different challenge.

Their defensive approach is also reflected in the number of clearances. Leading the league with 31.2 per game suggests that Cagliari often have to deal with pressure around their own penalty area. While this can be an effective strategy, it also means that their opponents are getting opportunities to attack and test the defence.

Little possession, limited attacking threat

The problems become even more apparent when we look at Cagliari’s attacking numbers. They rank last in Serie A for possession, touches in the opposition penalty area, and entries into the final third. These statistics suggest that creating sustained attacking pressure is not their main strength.

Rather than dominating games with the ball, Cagliari appear to rely on defensive discipline, hard work, and making the most of their opportunities. It is not necessarily the most attractive style of football, but the results speak for themselves so far.

There are, however, reasons to be cautious. If Cagliari continue to concede chances at a rate of 1.79 xGA per game, their current defensive record may be difficult to maintain.

Even excellent goalkeeping cannot guarantee that opponents will keep missing their chances throughout the season.

Can Cagliari maintain their defensive overperformance?

After six rounds, Cagliari are undoubtedly one of the most interesting teams to watch from a statistical perspective. They lead the league in goals conceded and clearances, rank third in goalkeeper saves, and fourth in interceptions. At the same time, their attacking numbers suggest a team that struggles to control possession and create opportunities.

The key question is whether their defensive efficiency can last. Cagliari have shown that they can grind out results without dominating the game, but their 0.50 goals conceded per match stands in sharp contrast to their 1.79 xGA.

For now, their defensive record deserves recognition. However, if the underlying numbers remain unchanged, Cagliari may eventually find it much harder to keep opponents off the scoresheet. Their season could ultimately depend on whether they can maintain their outstanding defensive efficiency or improve the quality of the chances they allow.