Simplify the following text for a Grade 8 native English-speaking person.
Original: Shields has also won many different titles including the Strikeforce Middleweight Championship , Shooto Middleweight Championship , Rumble on the Rock Welterweight Tournament Winner and the Elite XC Welterweight Championship .
Simplified: He is the first and last Elite XC Welterweight Champion . He is also the former Shooto Middleweight Champion and is the former Strikeforce Middleweight Champion .