The Block Glasshouse continued its reign as reality champion last night, while The Amazing Race: Australia v New Zealand debuted to a disappointing 588,000 viewers.
Nine's The Block Glasshouse won an audience of 1.112 million last night, making it the fifth most-watched free-to-air TV show, behind news programs.
It beat Seven's The X Factor, which finished in sixth spot with 1.055 million viewers across Australia's five metro areas.
But The Amazing Race: Australia v New Zealand, which premiered on Channel Seven straight after The X Factor, was the 18th most-watched program.
Overall, last night was a tie between Seven and Nine, with both networks taking 30.7% of the audience share. Ten was left with 15.7%, while the ABC took 18.3%.
News programs dominated the top end, with Nine News winning the biggest audience of the night, with 1.171 million people tuning in, according to preliminary overnight ratings figures from OzTam.
Seven News followed, with 1.156 million viewers, then Nine News at 6.30 was third, with an audience of 1.149 million, and Seven's Today Tonight was fourth with 1.134 million.
Completing the top 10 was Nine's A Current Affair, seventh with 1.026 million viewers, House Husbands on Nine, eighth with 954,000, Seven's Home and Away, ninth with 874,000, and ABC News, 10th with 844,000.
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