I have to admit that I've seen both of them used in similar contexts. Which preposition would sound better in the sentences below?
- He was a contestant on/in Master Chef last year. - on was used.
- They met when she was a contestant on/in Australia's Top Model. - on was used.
- Wood was a contestant on/in the 2004 edition of the Australian dancing with the stars. - in was used.
I also came across "...contestant in the Eurovision contest".
On and in are probably used for different kinds of competitions/contests/etc. When would you use one and not the other?
I was a contestant on a TV show. ( I was just part of the show. ) I was a contestant in a contest performed live before an audience.
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I was a contestant on a TV show. ( I was just part of the show. This puts the focus on the entertainment aspects.)
I was a contestant in a contest performed live before an audience. (I competed in the contest. This puts the focus on me and the contest, not on the "show.")