From BR Bullpen
Mario Mendoza Aizpuru (Elegante, Manos de Seda)
- Bats Right, Throws Right
- Height 5' 11", Weight 187 lb.
 Biographical Information
Mario Mendoza, a member of the Mexican Baseball Hall of Fame, is eternally immortalized in the United States as the namesake of the Mendoza Line, which usually refers to a batting average of .200. In his only season with 300 or more at-bats, 1979, Mendoza hit .198 as the Mariners' starting shortstop.
Mendoza, although he had a lifetime average of .215 along with a low walk percentage and virtually no power (.245 OBP, .262 slugging, 41 OPS+), managed to play nine seasons in the major leagues from 1974 to 1982 thanks to his superb defensive abilities. Bill James describes him as a "truly remarkable fielder."
 Play in the United States
He was signed as a free agent in 1970 by the Pittsburgh Pirates (after winning a Bronze Medal with the Mexican national team in the 1970 Central American and Caribbean Games), and hit .263/~.317/.317 for one of two Pirates teams in the Gulf Coast League, the GCL Tourists and fielded .943, the best mark of any shortstop with 25+ games that year. His average dropped to .234 but his OBP remained similar (~.306) and his slugging rose to .327 as he moved up to the Monroe Pirates in 1971. In spring training in 1971-1972, he fell under the sway of Roberto Clemente and often missed supper to learn from and listen to The Great One. Mendoza fell to .221/~.276/.280 in 1972 with the Salem Pirates, although he led Carolina League shortstops with 79 double plays and missed the fielding percentage lead by one point at .935. He stole 10 bases in 11 tries but struck out 125 times. Moving up to the Sherbrooke Pirates in the Eastern League in 1973, he not only hit a higher .268/~.335/.381, but added 8 home runs as well. He swiped 30 bases, but was caught 23 times, the most in the league. He was second among EL shortstops in putouts (227) and assists (407) but led in errors (35). Mendoza was named to the Eastern League All-Star team at shortstop.
In 1974, 1975, and 1976, he appeared in a few games with the Charleston Charlies of Triple A ball, but was mostly at the major league level with the Pirates. He started game three of the 1974 NLCS when Frank Taveras was injured and drove in a run in Pittsburgh's win, hitting an even .200 in the series. With Taveras, a poor fielder as the regular, Mendoza had a solid job as a defensive replacement. Mendoza had the game-winning hit on Opening Day in 1976 against the Phillies in the 11th inning.
The Pirates were a force in the 1970s, usually finishing 1st or 2nd in the division. Although Mendoza was a backup for 5 years with the Pirates, he was traded after the 1978 season and thus missed their big 1979 season when they finally won the World Series.
The Seattle Mariners acquired Mario with Odell Jones and Rafael Vasquez in return for Enrique Romo, Rick Jones and Tommy McMillan. He became a regular with the Mariners in 1979 and 1980, forming a double-play combination with Julio Cruz. In 1979, he set a record for most games played by a sub-.200 hitter (later matched by Steve Jeltz). Total Baseball rated him the #3 defender in baseball in 1979. In 1980, Mendoza pushed his average up to .245, his career best. His .286 OBP and .310 were also career highs and his 63 OPS+ was not horrible for a shortstop.
Traded to the Texas Rangers in a massive, 11-player arrangement, he hit .231/.254/.266 in his first season for them as the regular shortstop in the strike-shortened 1981 season. He hit .185 for the AAA Hawaii Islanders in his last season for a US-based team in 1983.
Interestingly, the most similar player to Mendoza is Jackie Hernandez, who was also a weak-hitting shorstop and who played for the Pirates in the years immediately before Mendoza came up with them.
 Play in Mexico
Mendoza played 18 years in the Mexican Pacific League (Liga Mexicana del Pacífico), playing five times in the Caribbean Series. After his major league career ended, he spent seven years in the Mexican League (Liga Mexicana). He hit .291/~.349/.365 in Mexican League play and was caught 27 times in 39 steal attempts. In Mexico, he was popular among female fans for his looks and his defense drew raves.
Mario hit .240/~.303/.265 for the 1982 Mexico City Red Devils after leaving Texas. Following his season with Hawaii, he returned to hit .325/~.371/.425 for the Rieleros de Aguascalientes and Monclova Steelers. With Aguascalientes in 1985, he batted .286/~.328/.371. Missing the most explosive year in Mexico, the Comando ball year of 1986, Mendoza hit .316/~.398/.415 in 1987 at age 36. In 1988, Mario batted .275/~.338/.329 for the Jalisco Charros and followed with a 1989 line of .298/~.348/.357 for the Monterrey Sultans. He finished his playing career in '90 with a .243/~.307/.304 year for Monterrey.
 Managerial career
After his playing days, he managed from 1992-2000 in the California Angels organization, hired at the advice of Bill Bavasi. He led the Palm Springs Angels to a 72-63 record in 1992. Fans in Palm Springs, CA ridiculed Mendoza for his offensive abilities and he once chased after a fan due to the criticism. In 1993, Palm Springs fell to 61-75, then in 1994, Mario piloted the Midland Angels to the same record. Midland improved to 66-70 in 1995. In 1996, Mendoza's Midland club finished last at 58-82, 9 games behind any other Texas League team.
Mendoza dropped to the Cedar Rapids Kernels in 1997 and they finished 62-76. The Lake Elsinore Storm were 66-74 under his watch in 1998. In 1999, Lake Elsinore went 63-77 and in 2000, they were 70-70. Among the players was his son, Mario Mendoza Jr.. In 2002, Mendoza managed for the San Francisco Giants organization at Shreveport in 2002 and they finished 60-79. Returning to Mexico in 2003, he began the year with the Tecolotes de los Dos Laredos but was replaced by Ruben Estrada; Andres Mora held the job by year's end. In 2004, Mendoza managed the Angelopolis Tigers before being replaced by...Andres Mora. On May 9, 2005, Mendoza was hired to replace Julian Yan as manager of the Olmecas de Tabasco and survived the season. He returned to Tabasco in 2006, his first time in six years that he held the same job from one year to the next. He began 2007 as manager of the Campeche Pirates, but was replaced in mid-season by Teddy Higuera with the team struggling.
In 2012, Mendoza was a coach for the Rieleros de Aguascalientes.
He also managed Hermosillo, Ciudad Obregón, Guasave, Mexicali in the LMP.
As of 2010, Mendoza is the Mexico scout for the Los Angeles Angels of Anaheim.