New Delhi: Rested from India's silver medal winning Champions Trophy campaign, Sardar Singh was today named captain of the 18-man squad for the 6 Nations Invitational hockey tournament to be held in Valencia from June 27. Drag-flicker Rupinder Pal Singh also made a return with Sardar, and so did Birender Lakra. Goalkeeper P R Sreejesh captained the Champions Trophy side in London where India won their maiden silver in the competition history. The squad features a strong defensive line up, with experienced campaigners VR Raghunath and Kothajit Singh joined by the returning Lakra and Rupinder Pal. Vikas Dahiya remains a back up to custodian Sreejesh. The other teams in the tournament are Argentina, Germany, New Zealand, Ireland and hosts Spain. "After winning our first medal at the prestigious Champions Trophy tournament over the weekend, we are confident to deliver our best at the 6 Nations Tournament as well. All these matches are stepping stones towards the ultimate goal - Rio Olympics 2016," said Sardar. "The brilliant display of tactical hockey during Champions Trophy by the squad has positively elevated are Olympic medal-winning hopes. Three of the teams we face in Valencia are in our Pool at the Olympic Games, so that will help us assess and analyse our tactics better too," he added. Chief Coach Roelant Oltmans said the squad is building up nicely for the Rio Olympics. "I am really impressed by the boys with their recent performances, especially at the Champions Trophy. They are implementing the learnings of the training well into action at the tournaments. I hope we keep up the spirit and continue to deliver performances like this. "The key to the tournament will be to use it almost as a host of friendlies, before the Games. We will try to maximise on our squad rotations, tactical experiments and analyse our opponents there," he said. "Most teams, will come with what resembles their full strength squad and so it will give us a good indication of our strengths and weaknesses, prior to Rio." India take on Germany in the opener on June 27. Squad: Goalkeepers: PR Sreejesh (VC) Vikas Dahiya; Defenders: Rupinderpal Singh, VR Raghunath, Kothajit Singh, Surender Kumar, Harmanpreet Singh, Birendra Lakra; Midfielders: Danish Mujtaba, Chinglensana Singh Manpreet Singh, Sardar Singh (Captain), SK Uthappa, Devindar, Sunil Walmiki, Harjeet Singh; Forwards: Talwinder Singh SV Sunil, Akashdeep Singh, Ramandeep Singh, Nikkin Thimmaiah.