Duryodhana begins listing the Pandava warriors by name. He tells Drona: "In their army are heroes and mighty bowmen who are the equal of Bhima and Arjuna in battle." Then he names three: Satyaki, King Virata, and the great chariot warrior Drupada.
Satyaki was a Yadava warrior and a devoted follower of Krishna. King Virata was the ruler in whose kingdom the Pandavas spent their year of hiding in disguise. Drupada was Draupadi's father and a sworn enemy of the Kauravas. All three were seasoned, fearsome fighters.
By naming these warriors to Drona, Duryodhana is sending a message: do not take the opposing army lightly. But the very act of counting the enemy's strength reveals something about Duryodhana himself. His detailed tally reflects both caution and a nervousness he cannot quite conceal.