Wasps have revealed that director of rugby Dai Young is to step back from first-team duties for an "interim period".
The Premiership club stated on Tuesday that Lee Blackett will switch from his role as attacks and backs coach to become interim head coach.
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Young was appointed by Wasps nine years ago and has since masterminded three successive play-off appearances.
The dual code former Wales prop had a successful spell as Cardiff Blues head coach before joining Wasps.
Coventry-based Wasps are ninth in the Premiership with just three wins from nine matches.
Young's side failed to qualify for the quarter-finals of the European Challenge Cup, finishing third in Pool 3.
