In this post, the shot performance of M Salah at Roma an Livepool is compared. The objective is to find statistically significant (p<0.05) and non significant (but revealing) differences. Significant differences are indicated by the acronym SSD (Statistical Significant Difference) in their comment line.
The Decision Trees method (https://en.wikipedia.org/wiki/Decision_tree_learning) is used for the analysis, in particuar the CART algorithms.
- Stats and Analysis
Salah has played for Roma in Serie A in the 2016-17 season, and for Liverpool in the EPL in 2017-18
The analysis shows that Salah performance has much improved at Liverpool. The number of goals scored has doubled (31 vs. 15) with roughly the same number of matches and minutes played – is a strong indicator of better performance. Howver, we must take into account that at Roma he had fewer shots (74 vs. 132) as Dzeko was the main forward target there.
The quality of his shot has improved significantly (fig. 2). But, unfortunately, this is a rather subjective evaluation parameter in the data to be given much weight. However, he is definitely shooting more from his left foot at Liverpool (Fig. 3). And under more defensive pressure than at Roma (Fig. 4), while receiving more Open Play passes (fig. 5).
Salah’s main shooting location has also shifted from the right to the centre-right. At Roma, his shots came mainly from the right side of the goal (Pic. 1), while at Liverpool are more evenly distributed, though the right side remained favourite. Logically, this is also the side where most of his shots assists came from, with Mane and Firmino the main providers.