“…In the cases of disagreement, the senior author graded the study. Postsurgical outcomes were compiled including the percentage of athletes who were able to return to play at their previous level of competition (10 articles reporting) [2, 8-10, 17, 19, 23, 24, 28, 29], the recovery period after lumbar discectomy to return to play (four articles) [8,23,24,29], the number of games played after surgery (three articles) [8,9,17], the number of years played after surgery (two articles) [10,17], and performance outcomes based on statistical performance both before and after lumbar discectomy (three articles) [8,10,17]. Performance scores for two studies [9,17] based on a previously published scoring system [5] using statistics unique to each sport and position were used as an outcome measure.…”