Simplify the following text for a Grade 8 native English-speaking person.
Original: The two had a series of controversial clashes on and off the track , including the collision at the 1994 Australian Grand Prix that gave Schumacher his first title by a single point .
Simplified: The two clashed on and off the track ; their collision at the 1994 Australian Grand Prix gave Schumacher his first title by a single point .