Complex sentence: From 2007 to the end of 2010, the WEC was run as a separate promotion under the Zuffa banner, airing events 28 to 53 on Versus in the USA and on The Score in Canada.
Split into simpler sentences: From 2007 to the end of 2010, the WEC was run as a separate promotion under the Zuffa banner. Airing events 28 to 53 on Versus in the USA and on The Score in Canada.