Speed runs up getting run over (5)
'run over' is the definition.
(I've seen this before)
'speed runs up' is the wordplay.
'speed' becomes 'pace' (pace is a kind of speed**).
'runs' becomes 'r' (cricket abbreviation).
'up' shows that the letters should be reversed in order (in down clue: letters go upwards).
'pacer' written backwards gives 'RECAP'.
'getting' acts as a link.
(Other definitions for recap that I've seen before include "Summarise at the end", "Go over study material again", "Go back over the main points", "Provide summary", "Run over the points again".)