Complex sentence: Clements made his professional MMA debut in June 2005, and fought primarily in his native Canada, amassing a record of 10-4 with two knockout wins over UFC veterans Rich Clementi and Jonathan Goulet, before joining the UFC himself in 2012.
Split into simpler sentences: Clements made his professional MMA debut in June 2005, and fought primarily in his native Canada. Clements amassed a record of 10-4 with knockout wins over UFC veterans Rich Clementi and Jonathan Goulet before joining the UFC himself in 2012.