Phillies fans lived up to their ruthless reputation on Friday ... chanting "DUI" at Braves star outfielder Marcell Ozuna during Philadelphia's playoff game against Atlanta. It all went down in the first inning at Citizens Bank Park in Philly -- Ozuna was up for his first at-bat of the afternoon…

Aaron Nola -- one of the MLB's best pitchers -- says baseball should NOT move on from umpires in favor of automatic strike zones, telling TMZ Sports, "I don't think it should happen." Of course, balls, strikes and umps have been a huge topic in the sport recently ... especially after Nola's famous…