Great Analytics Article on Matt Turner

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But there’s another version called post-shot expected goals, which measures the same probability at the moment the shot crosses the goal line — or would cross it, if the keeper didn’t save it. By including information about ball placement, PSxG can give us an idea of how many goals a keeper concedes compared with how an average shot-stopper would have done against the same shots. In Turner’s case, the difference is huge. According to American Soccer Analysis, he’s saved over 22 more goals than expected since 2018. The second-place keeper has less than 15. Turner’s goals conceded divided by xG ratio is 0.82, or about four goals allowed for every five that an average shot-stopper would have conceded. No active MLS keeper comes close.

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