I don't know what the actual answer is, but I say 6 hits without scoring a run is theoretically possible: three hits to load the bases, two fielder's choice outs of the lead runners, then two more singles to load the bases again. Then the 6th hit would be a batted ball into a baserunner. The baserunner would be the 3rd out and the batter is credited with a hit. Or the 6th hit could be, although unlikely, an infield hit where there's an attempted putout at 1st, then the batter rounds 1st in attempt to go to 2nd and is immediately tagged out before the run crosses the plate.
An immaculate inning in major league baseball is one in which three batters are retired on nine straight strikes.
30-3
The longest inning in Major League Baseball was the 10th inning that was played on May 8, 2004 between the Texas Rangers and the Detroit Tigers with the game being played in Arlington, Texas. The inning lasted one hour and 8 innings and included a total of 110 pitches thrown and 18 runs.
Alex rodriguez with 2 homeruns and 7 RBI's in 2009
Brian Lara has scored 400* in an inning.
on April 18th, 2009 the Cleveland Indians set a major league record scoring 14 runs in one inning.[2nd inning]
An immaculate inning in major league baseball is one in which three batters are retired on nine straight strikes.
Youngest player in NBA history to lead the league in scoring
Chicago cubs
He leads the all time scoring record for Major League Soccer he currently has 143 goals.
The Red Sox hold the Major League Baseball record with 19 runs in one inning.
By rule there is no limit.
30-3
The longest inning in Major League Baseball was the 10th inning that was played on May 8, 2004 between the Texas Rangers and the Detroit Tigers with the game being played in Arlington, Texas. The inning lasted one hour and 8 innings and included a total of 110 pitches thrown and 18 runs.
Alex rodriguez with 2 homeruns and 7 RBI's in 2009
Brian Lara has scored 400* in an inning.
59 - Orel Hershiser of the Dodgers from August 30 (6th inning) to September 28th (10th inning) of 1988.