Complex sentence: They began as an expansion team in the West Coast League in 2011 and are currently members of the Great West League and began play in 2011 at Kiger Stadium, also the home of the Oregon Tech Owls.
Split into simpler sentences: They began as an expansion team in the West Coast League in 2011. They are currently members of the Great West League and began play in 2011 at Kiger Stadium, also the home of the Oregon Tech Owls.