Simplify the following text for a Grade 7 native English-speaking person.
Original: Sky Sports is a group of 10 channels - Sky Sports 1 , Sky Sports 2 , Sky Sports 3 , Sky Sports 4 , Sky Sports News , Sky Sports HD 1 , Sky Sports HD 2 , Sky Sports HD 3 , Sky Sports HD 4 , Sky Sports News HD and At the Races .
Simplified: Sky Sports 4 ( originally launched as Sky Sports Extra ) is the fourth Sports Channel launched by Sky Sports .