Baseball and softball will launch their bids to return to the Olympics tomorrow as seven sports federations attempt to make the 2016 Games.

Roller sports, golf, rugby sevens, karate and squash will also compete for the two spots that are up for grabs.

IOC President Jacques Rogge said they are looking for an added value - wide appeal, especially for young people.

The four cities bidding to host the Games will also make their presentations in Switzerland this week.

Chicago, Madrid, Rio de Janeiro and Tokyo will put their case straight to IOC members on Thursday and Friday in the first ever forum for rival cities to stake their claim.