Stage 1a of season 9 of the TCEC is history, and Komodo (then version 9.42; the just-released version 10 will takes its place in stage 2) won with a super score of 14/15, giving up just two draws. Its chief rival, Houdini 4, was also undefeated going into their head-to-head battle in the last round, but lost to Komodo (I've posted the game here) finish a point and a half behind, a point ahead of fellow old-timer Rybka 4.1.
All of those programs and more qualified for stage 2, which will include the successful programs from stage 1b. The top program in that part of the draw is Stockfish, which surprisingly didn't manage to win in round 1 - albeit with Black - against a program (Vajolet) rated 301 points below it.
You can follow the live action here.