PokerTracker

Is there a summary field available at the hand level to show the number of players starting each hand?

This is stored in the database in the field "holdem_hand_summary.cnt_players". (or swap 'holdem' for omaha, or add 'tourney_' to the start for tournaments)

There is a stat which uses this available as a free download from the Customize PokerTracker section, called "Players in Hand (HCH)", posted by me.

Many thanks for the help and sorry for the very late reply.