noun
pass completion rate; pass completion percentage
Sports term, especially in soccer/football and rugby, referring to the percentage of successful passes out of total attempted passes.
彼のパス成功率は90パーセントを超えている。
His pass completion rate exceeds 90 percent.
成功率 is a general term for 'success rate' used in many contexts, while パス成功率 is limited to pass completion in sports.
Compound of パス (pass, from English) and 成功率 (success rate).