There lacked of David's servants nineteen men This renders it probable that the twelve men of Judah, who in the beginning of the fight engaged in combat with as many men of Benjamin, were not killed; for if they were, then there would have been no more than seven men killed in the subsequent battle; which is not likely.
Related Commentaries of 2 Samuel 2:30
2 Samuel 2:30
30 And Joab returned from following Abner: and when he had gathered all the people together, there lacked of David's servants nineteen men and Asahel.