"Although Mr Lindahl, 28, retired from the sport in 2013, today's decision prevents him from resuming playing professional tennis for the seven years of the ban," the TIU said in a statement.
"He is also prohibited from attending any tournament or event organised or sanctioned by the governing bodies of the sport for that period," it added after a hearing held by independent anti-corruption hearing officer Richard H. McLaren.
In April last year, Lindahl avoid a jail term after pleading guilty to match-fixing charges relating to a game in 2013.
Walkin, 22, a singles player ranked 1,066, was given a six-month suspension after being found guilty of attempting to contrive the outcome of the event.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
Frost, who failed to co-operate with TIU during the investigation, served a provisional ban between Oct. 2013 and Sept. 2014. McLaren decided no additional suspension or fine must be imposed on the 28-year-old.
(Reporting by Hardik Vyas in Bengaluru; Editing by Amlan Chakraborty)
