Purpose:To compare sprint and countermovement-jump (CMJ) performance among competitive soccer players as a function of performance level, field position, and age. In addition, the authors wanted to quantify the evolution of these physical characteristics among professional players over a 15-y period. Methods: 939 athletes (22.1 ± 4.3 y), including national-team players, tested 40-m sprint with electronic timing and CMJ on a force platform at the Norwegian Olympic Training Center between 1995 and 2010. Results: National-team and 1st-division players were faster (P < .05) than 2nd-division (1.0-1.4%), 3rd-to 5th-division (3.0-3.8%), junior national-team (1.7-2.2%), and junior players (2.8-3.7%). Forwards were faster than defenders (1.4%), midfielders (2.5%), and goalkeepers (3.2%) over 0-20 m (P < .001). Midfielders jumped ~2.0 cm lower than the other playing positions (P < .05). Sprinting velocity peaked in the age range 20-28 y and declined significantly thereafter (P < .05). Players from 2006-2010 had 1-2% faster 0-20 m and peak velocity than players from the 1995-1999 and 2000-2005 epochs, whereas no differences in CMJ performance were observed. Conclusions: This study provides effect-magnitude estimates for the influence of performance level, position, and age on sprint and CMJ performance in soccer. While CMJ performance has remained stable over the time, there has been a small but positive development in sprinting velocity among professional players.Keywords: sprint, vertical jump, anaerobic characteristics Speed and power are critical performance factors in soccer. Male soccer players conduct high-intensity actions every 60 to 90 seconds during games, each lasting 2 to 3 seconds on average. 1-3 Although sprinting and high-intensity actions represent only 8% to 12% of covered running distance, these capabilities are considered critical. [3][4][5][6] In this decisive portion of match play, it is likely that maximal-sprint situations represent particularly critical moments. Both horizontal acceleration (sprinting) and vertical acceleration (jumping power) are involved in ball possession, repossession, defense play, corner kicks, and attack on goal.Arnason et al 7 reported that players at high competition level jumped higher than players at lower performance levels. However, Cometti et al 8 and Rösch et al 9 observed no differences in speed or jump height as a function of performance level. A few studies have investigated speed and power characteristics according to playing position. [10][11][12][13][14][15] Davis et al 10 concluded that forwards were the fastest players, ahead of defenders, midfielders, and goalkeepers. Boone et al 11 reported differences in speed and countermovement jump (CMJ) according to playing position. Sporis et al 12 found differences in speed but not for CMJ, while Taskin 13 found no speed differences as a function of position. The literature also remains unclear regarding potential sprint-performance differences across age among elite players. 9,16 Most previously published studies w...