Complex sentence: In the beginning, the game was called Pursue The Pennant cause Tom Tippet had a marketing relationship with the company of the same name but this relationship ended in 1995, when the game and company were officially named Diamond Mind Baseball.
Split into simpler sentences: In the beginning, the game was called Pursue The Pennant because Tom Tippet had a marketing relationship with the company of the same name. This relationship ended in 1995, when the game and company were officially named Diamond Mind Baseball.