Mariano Duncan Nalasco (born March 13, 1963) is a retired second baseman and shortstop who played for several Major League Baseball teams during his 12-year career. He was the infield coach and first base coach for the Los Angeles Dodgers under Managers Grady Little and Joe Torre. Duncan currently serves as the hitting coach for the Brooklyn Cyclones, the New York Mets' High-A team. Playing career Los Angeles Dodgers Duncan was signed by the Los Angeles Dodgers as an undrafted free agent on January 7, 1982. He played in the Dodgers minor league system for three seasons with the Lethbridge Dodgers in 1982, Vero Beach Dodgers in 1983 and San Antonio Dodgers in 1984. He stole 56 bases for Vero Beach and 41 bases for San Antonio, and at San Antonio he tied Stu Pederson for the league lead in triples. He made his major league debut, starting at second base, for the Dodgers on April 9, 1985 against the Houston Astros, and was 0 for 4 in his debut. He got his first major league hit on April 10 against Astros pitcher Joe Niekro. In his rookie season, July 6, 1985, vs. St. Louis Cardinals, Duncan accomplished the rare feat of bunting for a double where the ball was untouched and did not roll beyond the base paths. The Dodgers won the game 8-3. He stole 38 bases in his rookie season and finished third in the rookie of the year voting. Cincinnati Reds Duncan was traded by the Dodgers to the Cincinnati Reds with Tim Leary on July 18, for Lenny Harris and Kal Daniels. Philadelphia Phillies Duncan signed with the Philadelphia Phillies on April 14, 1992. He played three seasons for the Phils before being claimed off waivers by the Reds on August 8, 1995. New York Yankees On December 11, 1995, Duncan signed with the New York Yankees, and he spent a season and a half in New York. In his only full season in 1996, he hit .340 with 56 runs batted in. Duncan coined the phrase, "we play today, we win today... das it!" which became the mantra for the 1996 World Series champion New York Yankees. Many of the players wore T-shirts with the slogan under their uniforms daily. In 1997, he played in 50 games, hitting just .244 with 13 runs batted in before being traded to the Toronto Blue Jays with