Despite training load being the main intervention in soccer performance enhancement, there is minimal evidence concerning its nature and relationships with the perceived psychological and physical conditions, soccer-specific fitness components, and most importantly with success. The purpose of this study was to examine the nature and relationships of perceived training load and stress or recovery level, soccer-specific neuromuscular fitness parameters, and success. To this end, a correlation study designed was used. To collect data from volunteered soccer players (n=88), five National League teams found in Amhara Regional State were participated. In this research, the variables/behaviors in question were measured using specific tools. The measurement was taken for about five weeks with each variable measured five times with five consecutive scores. The collected data were analyzed using descriptive statistics, ANOVA, zero-order and partial correlations, and general linear model (GLM.) The ANOVA findings show significant differences in neuromuscular fitness components and success across teams. In addition, there is a significant difference in NMF levels among players of different positions. Both the correlation and GLM results of the study showed that there is a significant correlation between perceived weekly training load and the players’ perceived stress and recovery level. In addition, there is a significant correlation between the training load and neuromuscular fitness components. In addition, both perceived stress and recovery have a significant relationship with neuromuscular fitness. Similarly, stress and recovery level significantly correlated with fitness. Eventually, training load, stress or recovery, and neuromuscular fitness found to correlate with success. Overall, there is a significant positive correlation between training load, perceived stress and recovery, neuromuscular fitness, and success. Based on these findings, this research recommends that soccer team players of the National League and their coaches and trainers need to focus on the training load for the performance enhancement of their team. From the practical perspective, it is recommended that coaches and trainers should prepare optimal training load adaptation for their soccer players at the National League level, so that their soccer players get adequate opportunities to needs-based NMF improvement to increase both NMF parameters and team success, at the same time.