Definition from Wiktionary, the free dictionary
slash line (plural slash lines)
- (baseball) The batting average, on-base percentage, and slugging average of a batter or team when expressed together, separated by slashes.
- His slash line since being traded is .262/.344/.427.
- (baseball) The batting average, on-base percentage, and slugging average of batters that have had plate appearances against a pitcher or team.
- The opponent slash line against Jones this season is a weak .195/.232/.367.