Christopher Louis Bosio (born April 3, 1963 in Carmichael, California) is a former Major League Baseball pitcher who played for the Milwaukee Brewers and Seattle Mariners from to . He was the second pitcher in Mariners' history to pitch a no-hitter on April 22, , against the Boston Red Sox. The dramatic last out was made when shortstop Omar Vizquel bare-handed a high chopper over the mound by Ernest Riles and threw him out. It still stands as the last no-hitter in Mariners history. He served as the Tampa Bay Devil Rays pitching coach in .