The aim of this study is to develop momentum profiles of elite men’s badminton singles players through notational analysis of winners and errors. Eight matches were taken from the London 2012 Olympic Games. Analysis was conducted on rally end shots, rally outcomes and momentum using both notational analysis and the Statistical Package for the Social Sciences (SPSS). Shots were divided into eight variables; Net shot, drop shot, drive, smash, overhead clear, block, serve and lift. The outcomes were divided into five variables; successful shot, forced error, unforced error, opponent successful shot and opponent error. Momentum was looked at in terms of positive and negative momentum and displayed on momentum analysis graphs and cumulative momentum graphs. A chi-squared test of association was used to determine the association between rally end shots and rally outcomes for all eight matches. Descriptive statistics produced percentages of shot types, outcomes and areas of the court used to end rallies in badminton. The results showed that the smash shot was the most popular shot used to end the rally (31.9%). The results also suggested that the opponent error (28.8%) and the successful shot (21.4%) were used the most frequently to end rallies. The smash shot was concluded as the most successful shot (37.6%) and the net shot was the shot that produced the most errors (34.8%). A Chi-squared test concluded that there is a significant association between different shot types and outcomes used to end rallies (p<0.001). Both notational analysis and momentum analysis can be of benefit to performers and coaches as they can be used to plan appropriate training sessions to improve performance. The results of this investigation could then be used alongside sports psychologists to improve concentration of performers and reduce the effects of negative momentum. Future research should analyse the differences between peaks and troughs within momentum graphs and seek to develop reasoning behind these differences.