Complex sentence: Brett McDermott is an English mixed martial artist and retired professional rugby league player who turned to MMA after being banned from rugby league after testing positive for steroids, he represented Ireland, and played club level for all the Cumbrian clubs except Carlisle Border Raiders.
Split into simpler sentences: Brett McDermott is an English mixed martial artist and retired professional rugby league player. In rugby he represented Ireland, and played club level for every Cumbrian clubs except Carlisle Border Raiders.