thesupremecommanderYou can, because player_death is emitted as an event to the STV client. That contains a lot of juicy info.
I'm just skeptical that extracting KAD is useful without also getting damage and heal stats, which is usually how people measure how well a player is doing in a match.
KAD is only the thin end of the wedge, you have kills per minute, net kills per minute (kills - deaths/time), caps per kill to measure team efficiency in converting number advantages, who killed who, medic picks.... I'd be tempted to say demo picks but they're not quite what they were at the moment, dominations, etc. You can do a lot with kills.