sentences:  The Rockies, along with the San Diego Padres, made MLB history on Opening Day, April 4, 1999, by playing a contest in Estadio de Béisbol Monterrey in Monterrey, Mexico, making it the first Opening Day game held outside of the United States or Canada.Larry Walker won his second batting title by leading MLB with .379 average, setting a Rockies' club record, and the fourth-high single-season average since Ted Williams hit .406 in 1941.Besides winning the batting championship, Walker also led the major leagues in on-base percentage (.458), and slugging percentage (.710), becoming the first player to lead MLB in all three categories since George Brett in 1980, and the first National Leaguer since Stan Musial in 1943.