[Electronica1]

Originally Posted by rahulbekal

The first hint is
"8234/57, 61126/1963, 62326/15806"
3/4/82 is Landon Donovan's birthday and he had 57 assists in MLS.
1/26/61 is Wayne Gretzky's birthday and had 1963 assists in NHL.
3/26/62 is John Stockton's birthday and had 15806 assists in NBA

The second hint
Steve Ralston, born 6-14-74, holds the MLS record for assists: 135.

Wayne Gretzky, born 1-26-61, holds NHL record for career assists: 1963.

John Stockton, born 3-26-62, holds the NBA assists record: 15806.

The only difference is that FIRST GDC realized that Ralston had more assists than Donovan, so had to change the clue.

So it is baseball because that is the only sport that has assists that they did not list (well that and water polo but I think baseball makes more sense)