About 4 I think
642
I'll presume your question is, "How many World Series have gone to seven games over the last ten years." Seven game series occured in 2011, 2002, and 2001.
The Cubs last won the World Series in 1908. Since then, the Yankees have won 26 World Series.
Just 2. 1907 and 1908. They appeared in the 1906 Series but lost to the White Sox in 6 games. Their last World Series appearance was back in 1945. It is 102 years since they last won a World Title.
27 World Series.
7 Games
The Pirates have played in 47 World Series games in 7 World Series. They have won 5 of those 7 Series and, incredibly, all have been won by 4 games to 3.
The 1968 World Series was played in 7 Games, as the Tigers beat the Cardinals 4 games to 3.
The Cardinals beat the Red Sox in 7 games in the 1946 World Series, 4 games to 3.
Well, it depends, The most any World Series can ever have is 7. But depending on how many games the Phillies or the Yankees win the Series can go on for 4, 5, 6, or 7 games.
The Cubs won three games in the 1945 World Series.
The Pirates have played in 47 World Series games in 7 World Series. They have won 5 of those 7 Series and, incredibly, all have been won by 4 games to 3.