Saves per Goal Conceded: Liverpool Goalkeeper Efficiency

Alisson Becker – Shot-Stopping and Distribution

Alisson Becker is widely regarded as one of the most complete goalkeepers in world football, and his efficiency metrics at Liverpool have consistently placed him among the Premier League’s elite. The metric “saves per goal conceded” (SPG) measures how many saves a goalkeeper makes for every goal they allow, offering a more nuanced view than raw save percentage alone. For a goalkeeper in a high-pressing system like Liverpool’s under both Jürgen Klopp and Arne Slot, this figure reflects not just shot-stopping ability but also positioning, decision-making, and the defensive structure in front of them.

In practical terms, a higher SPG indicates a goalkeeper who either faces low-quality chances or makes exceptional stops to keep the scoreline respectable. Alisson’s SPG numbers have fluctuated across seasons, influenced by Liverpool’s defensive injuries, tactical shifts, and the quality of opposition. For instance, during the 2020/21 campaign when Liverpool’s central defensive partnership was decimated by injuries, Alisson’s SPG dropped significantly as he faced higher-quality chances from closer range. Conversely, in the 2021/22 season with a more settled backline, his SPG improved as the team conceded fewer high-xG opportunities.

Caoimhín Kelleher – The Understudy’s Efficiency

Caoimhín Kelleher has emerged as a reliable deputy for Alisson, particularly in domestic cup competitions and occasional league appearances. His SPG metrics often compare favourably to Alisson’s, though the sample size is smaller and the quality of opposition in cup ties can be variable. Kelleher’s strength lies in his composure in one-on-one situations and his ability to make critical saves when called upon, which tends to boost his SPG in matches where Liverpool dominate possession.

A key distinction between the two goalkeepers is distribution. Alisson’s long-range passing and ability to initiate counter-attacks contribute to Liverpool’s overall attacking threat, while Kelleher’s distribution is more conservative but still effective within the system. The SPG metric does not capture this dimension, but it remains relevant for evaluating their core shot-stopping duties.

Historical Context: Liverpool Keepers in the Premier League Era

To understand the significance of SPG, it helps to compare modern keepers with their predecessors. Liverpool’s goalkeeping history includes figures like Bruce Grobbelaar (agile but erratic), David James (talented but inconsistent), Jerzy Dudek (heroic in Istanbul but prone to errors), and Pepe Reina (a commanding presence in the mid-2000s). Reina’s SPG numbers from 2005–2010, for example, were strong due to a well-organised defence under Rafael Benítez, but they declined as Liverpool’s defensive quality waned.

Modern analytics allow for more precise comparisons. Alisson’s SPG in his best seasons (2018/19, 2019/20) rivals or exceeds Reina’s peak, while Kelleher’s cup performances have occasionally produced SPG figures that would rank among the best in the league over a small sample. However, SPG alone does not account for the quality of chances faced—a goalkeeper facing 10 shots from 30 yards out will naturally have a higher SPG than one facing 5 shots from six yards.

Factors Influencing SPG at Liverpool

Several tactical and contextual factors affect SPG for Liverpool goalkeepers:

• Defensive Pressing System: Liverpool’s high line and aggressive pressing under Klopp and Slot mean goalkeepers often face counter-attacks and through balls. This can lead to higher-quality chances for opponents, lowering SPG if the defence is breached.
• Injury to Key Defenders: The 2020/21 season saw Liverpool’s centre-back crisis, leading to a higher volume of clear-cut chances against Alisson, depressing his SPG.
• Set-Piece Vulnerability: Liverpool have occasionally struggled with set-piece defending, which can result in goals from close range, reducing SPG for the goalkeeper even if they make saves elsewhere.
• Goalkeeper Distribution: Alisson’s ability to play out from the back and launch quick attacks sometimes leaves him exposed if a pass is intercepted, leading to a high-quality chance against him.

What to Check When Evaluating SPG

When assessing a goalkeeper’s efficiency using saves per goal conceded, consider these factors:

• Sample Size: A small number of appearances can produce misleadingly high or low SPG figures. Always check the number of matches and total shots faced.
• Quality of Opposition: A keeper facing top-six sides will likely have lower SPG than one facing relegation-threatened teams, regardless of individual performance.
• Defensive Context: Injuries, tactical changes, and the overall defensive record of the team affect the quality and volume of chances conceded.
• Shot Location and xG: The expected goals (xG) of shots faced provides deeper insight. A keeper with a high SPG but facing low-xG chances is less impressive than one with a moderate SPG facing high-xG opportunities.
• Distribution and Sweeping: SPG does not measure a keeper’s contribution to possession or their ability to sweep behind a high line, both critical for Liverpool’s system.

Related Reading

For a broader look at Liverpool’s defensive metrics, explore the player profiles and stats hub. You may also find value in analysing aerial duels won by Liverpool defenders and the assist providers for Liverpool in 2025 to understand how attacking and defensive efficiency interlink.