What is 634 in baseball?

Answer 1

The numbers refer to each fielder. Here are the numbers:

1. Pitcher

2. Catcher

3. First Base

4. Second Base

5. Third Base

6. Shortstop

7. Left Field

8. Center Field

9. Right Field

Your particular question shows 6-3-4 which is not a very common double play, and doesn't necessarily have to be a double play. It could just be a single out, but it took that many fielders to do record the out. But in any case, regardless of how many outs, it means

6-3-4 (Shortstop to First Baseman to Second Baseman)