Joined the Orioles in 2006 after spending the previous 15 1/2 years as pitching coach of the Atlanta Braves...The Braves pitching staff finished first or second in the National League in ERA in 12 of the last 14 seasons, and Braves hurlers posted an ERA under 4.00 in 13 of his 15 full seasons as coach...He has guided six Cy Young Award winners and nine 20- game winners, and had 10 different pitchers named to the NL All-Star team during his tenure...An story in September 2005 named him the best "assistant coach" in team sports history...The 1998 Braves starting rotation of Greg Maddux, Tom Glavine, John Smoltz, Denny Neagle and Kevin Millwood became only the 3rd Major League staff ever with five 16-game winners...In addition to his role in nurturing Maddux, Glavine and Smoltz the mainstays of the Braves pitching staff throughout most of his tenure Mazzone achieved renown for helping numerous rookies and veteran pitchers reach career achievements after arriving in Atlanta...Jorge Sosa in 2005, Jaret Wright and John Thomson in 2004, and Russ Ortiz in 2003 all achieved career highs in victories in their first season under Mazzone's tutelage...In 2002, Chris Hammond, out of baseball the previous 2 years, posted a 0.95 ERA, only the 3rd pitcher since 1900 to post a sub-1.00 ERA (minimum 70.0 IP)...Atlanta's team ERA of 3.13 in 2002 remains the lowest by a team since 1991 (Dodgers, 3.06)...From his first full season in 1991 through 2005, Atlanta's cumulative team ERA of 3.53 was lowest in the majors; the Dodgers were 2nd at 3.77. Was named Braves pitching coach on June 22, 1990, the same day Bobby Cox took over as manager... Atlanta had a 5.25 ERA as a staff when he took over; Braves hurlers pitched to a 4.14 ERA the remainder of the year...Worked as a coach and instructor in the Braves farm system beginning in 1979, including one year 1985 when he served as co-pitching coach of the major league team with the legendary Johnny Sain...Began his post-playing career in 1976 as manager with the independent Corpus Christi team in the Class A Lone Star League...Managed Class A Kinston in the Carolina League in 1978 before joining the Braves organization as a minor league pitching instructor in 1979...Served as pitching coach at AA Durham from 1983 until July 21, 1984, when he was named manager at Class A Greenville...After serving on the Braves' major league staff in 1985, returned to the minors to coach at Class A Sumter and Greenville in 1986 and 1987, respectively, then served as pitching coach at AAA Richmond from 1988 until being named Braves pitching coach in June 1990. Playing Career: Spent nine years as a pitcher in the minor leagues, compiling a 53-56 record and 3.77 ERA...Signed out of high school with the San Francisco Giants in 1967...Spent most of his career at the AA level...Had his best year at Class A Decatur in the Midwest League in 1969, going 15-10 with a 2.52 ERA...In 1972 at AA Amarillo, compiled a 2.62 ERA, but came 4.0 innings shy of qualifying for the Texas League ERA title...Finished his career with AAA Tucson in 1975.