Sydney have confirmed Leigh Tudor and Henry Playfair will join the AFL club under new coach John Longmire.

Tudor resigned from his assistant coaching role at St Kilda last month and will take a similar position at the Swans.

Playfair retired midway through this season and will stay at the Swans as development coach.

Tudor spent two seasons with the Saints and previously was an assistant coach at Geelong.

"We were very keen to have Leigh on our coaching staff as he has been involved with two high quality programs, at Geelong and St Kilda," Longmire said in a statement.

"At Geelong he coached their reserves to a premiership, so he was involved in coaching and developing their good players from a young age.

"Then he moved to St Kilda and spent the past two years there as an assistant coach, when they have clearly been a standout team."

Tudor will join John Blakey, Mark Stone and Stuart Dew as Longmire's assistant coaches.

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