Sonu Yadav’s three early wickets reduced Railways to 7 for 3, and Tamil Nadu’s spinners later helped dismiss them for 184, despite Zubair Ali’s 75. But the moisture-dependent pitch dried and began turning sharply, bringing Railways’ spinners into play. Tamil Nadu ended day one at 71 for 3, with Baba Indrajith and Andre Siddarth at the crease.