ST KILDA'S blockbuster Telstra AFL Trade Period has continued with speedster Zak Jones the latest player to join the club from Sydney.

The Saints handed their second-round selection (currently pick No.32) and a future third-round selection to the Swans in return for the midfielder and a future fourth-round selection.

Jones played 90 games across six seasons in the harbour city and was an important member of John Longmire's side playing mainly across half-back or on a wing.

The younger brother of Melbourne veteran Nathan, he requested to return to Victoria at the conclusion of his contract to be closer to family.

The 24-year-old's speed will give the Saints' midfield a massive boost.

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"We have a lot of guys at a similar age and with a similar level of experience," St Kilda list manager James Gallagher said.

"We think Zak will complement the likes of Jack Billings and Jade Gresham with his ability to break the lines and really attack the game with his speed.

"He is a real competitor who is entering the prime of his career, and we are excited for what he can achieve in the coming years. 

"I know our coaching group is really excited to have Zak as part of our team next season, and we think our fans will love the aggression he brings."

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Jones had an outstanding start to the 2019 season before he suffered a hamstring injury in round nine, but still averaged a career-high 22.4 possessions, 3.9 tackles and 3.9 inside 50s in 17 games. 

St Kilda's addition of Jones was part of a highly successful Trade Period, with the club also landing Fremantle star Bradley Hill, Port Adelaide pair Paddy Ryder and Dougal Howard and Richmond premiership forward Dan Butler.