Imagery is one of the most powerful tools for
sport psychological interventions to change
cognitions and to increase performance.1 Flow
is an optimal psychological state that facilitates
superior performances.2 The purpose of this
study was to investigate the efficacy of an
imagery intervention to enhance flow and performance.
In this single-case study, we followed
an advanced junior tennis player over the
course of eleven tennis competition matches.
After having assessed a stable baseline trend,
we introduced the intervention in the form of a
tennis specific imagery script. Results revealed
that flow and performance increased from
baseline to post-intervention phase, and that
performance was more stable throughout the
post-intervention phase.