The Spaniard was granted three weeks holiday after his exertions with his national team at Euro 2012, helping La Rojas retain the Henri Delauney Trophy and adding the Golden Boot to his winners medal.
Torres scored three goals in the tournament and will be looking to carry his form into pre-season and the 2012-13 campaign as Chelsea warm up in the US.
The European champions have had a mixed start to their tour, comfortably beating a Seattle Sounders outfit 4-0 before being held to a 1-1 draw by big spending Paris Saint-Germain.
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The Blues have two further matches lined up against an MLS All-Star side on Wednesday in Philadelphia and Italian giants AC Milan in Miami on Saturday.
Record signing Torres will be looking to feature in at least one of those matches as he aims to work his way back to full fitness.
He is the last player to join up with the squad and as such, undertook some solo fitness work with fitness coach Chris Jones on top of his first session back with the team.