Sabtu, 05 Januari 2013

Analysis of top 4 strikers in League 2 (2)

The analysis is continued following the first part last week (here). In the shot analysis, when treating unequal frequencies of starting appearances, the data are “normalised” by dividing the data by the frequency of starting appearances.  

Although the other three strikers have at least 2.5 shots per appearance, T Pope had only 1.83 shots per appearance which is significantly lower than others. In terms of getting shot chances, T Pope is weaker than the other three strikers. On the other hand, A Akinfenwa showed his weakness as he only got 1.12 shots on target per appearance. N Wells and J Cureton are similar, both getting high number in shots and shots on target. Even T Pope got less chance to shoot; he still managed to get 1.48 shots on target which means he utilise the chances well. If you look at this chart only, you may wonder why T Pope is the leading goal scorer in League 2. It is all because he is particularly strong at catching the chances even the chances he get are less than others. This brings us to the next analysis chart: Accuracy rate vs Conversion rate.

Accuracy rate = no. of shots on target / no. of shots total
Conversion rate = no. of goals / no. of shots total

T Pope is outperforming others in this chart in both rates. In previous chart, N Wells and J Cureton showed they got more chances to shoot and they did well in number of shots on target. It is reflected in their decent accuracy rate (66% and 71%). However, conversion rate is their weakness (26%) and it explains why they can’t be the leading goal scorer even they got more chances. T Pope’s conversion rate (48%) is 22% more than them. A Akinfenwa did well in conversion rate (31%) but he is weak at accuracy rate (45%). From the above two charts, you may realise N Wells and J Cureton are so similar. They both good at getting shooting chance, have a decent accuracy rate but weak at converting chances into goals. T Pope is another type of striker who is highly efficient. A Akinfenwa strike a balance between both types.

In analysing where the strikers scored, we can find out other characteristics of the strikers. A Akinfenwa is weak at long shot because only 8% of his goals were scored outside 12 yards from the goal line. It is reasonable if we combine the finding last week suggesting that he is strong at scoring by headers and in set play. N Wells is strong at scoring in 6-yard box (67%). Last week, we found out that he hasn’t scored any goal by header. If we combine both together, I guess that his goal scoring style is like “poacher” to catch the chances in 6-yard box by using his agility rather than strength. T Pope and J Cureton had a good balance in goal scoring area with T Pope stronger at 6-yard box and J Cureton stronger at 12-18 yard area.

This chart fits our finding beforehand. A Akinfenwa is strong at heading and he scored 92% of his goals within 12-yard area from goal. It is reasonable to see that he scored all goals by using 2 touches or less. N Wells fits his “poacher” style by scoring all his goals using 2 touches or less. In terms of using 3 touches or more, T Pope had the highest percentage (20%). If we combine our finding of his high conversion and accuracy rate, it can somehow show his composure in front of the goal by getting the best chance to score.

We can find out the strikers’ particular goal scoring pattern by using time analysis. Firstly, A Akinfenwa is much stronger in second half, only 31% of his goals were scored in the first half. Note that 46% of his goals were scored in the last 30 minutes of the game. This may be explained by his strength and strong header to attack at the end of the game. N Wells haven’t scored any goal in the last 15 minutes of the game. It is reasonable if we sum up the previous findings. Usually there will be direct style and long ball in the last 10-15 minutes if a team is losing, but N Wells is not the same type of striker like A Akinfenwa. N Wells is strong at feet and agility rather than header and strength. T Pope’s goal scoring pattern is interesting. 70% of his goals were scored in the mid 15 minutes of the halves. Only 5% of goals were scored in the first 15 minutes of the halves. He may need time to “warm up” in the game before showing his goal scoring power. Then we move on to the assist analysis to see how the strikers’ goals were assisted.

J Cureton is stronger than others in dribbling which can create the scoring chance himself. A Akinfenwa and N Wells have no dribbling goals, that means they heavily rely on the support from teammates because they can’t create chances themselves. It is reasonable if we refer back to the characteristics of these two strikers. N Wells is strong at scoring in rebounds because 25% of his goals were assisted by teammates’ shots. It fits his “poacher” style mentioned above. Moreover, none of his goals were come from crossing. Surprisingly, only 20% of T Pope’s goals were assisted by passing. He relied on crossing (40%) more than other strikers. Then we analysed where the assists were. Please note that only open play goals assists were shown in the following diagrams.
A Akinfenwa:

As I mentioned last week, A Akinfenwa is strong at headers and set play. This diagram shows that his headers goals were heavily linked to set play. Therefore, only 40% of open play goals assists were from the flanks.
J Cureton:

J Cureton’s goals were mainly assisted from the right flank and centre. If any team play against Exeter, they should pay more attention to defending at their left flank (particularly from 12 yard to outside the penalty area) because 35.7% of J Cureton’s goals were assisted from these two zones.
N Wells:

This diagram further supports my previous arguments about the characteristics of N Wells. He is strong at agility and feet, weak at headers and strength. He plays like a “poacher” but none of his goals were come from crossing. Therefore, this diagram is under expectation that 83.3% of assists came from centre. By using this diagram, we know more about how he scored. 33.3% of assisted were from 12-18 yard area. If we combine this with the previous findings:
  1. 67% of his goals were scored in 6-yard box
  2. 50% of assists were passing, 25% of assists were shots
  3. 89% of goals were scored by feet
  4. 100% of goals were scored by 2 touches or less

We can figure out a full picture how he scored open play goals: his teammates attack through middle of the pitch, making a pass or take a shot (particularly 12-18 yard area). If it is a pass, he would at most take one touch before the shot. If it is a shot, he would take the rebounding chance in the 6-yard box.
T Pope:

From last week’s finding, T Pope is an all-round striker. He is good at scoring by right foot, left foot and header as well. Even in this assist diagram, the assists covered a wide range of areas. These make defending the leading goal scorer a difficult task. However, it is still a useful tip to find out that 41.3% of assists came from centre.

I think the whole analysis process covers enough details to find out the characteristics of the strikers. This is the end of the striker analysis. I may make a review about striker analysis at the end of the season.

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