Ramkumar Ramanathan and Prajnesh Gunneswaran handed India a 2-0 lead over Uzbekistan as they staved off a spirited challenge in their respective singles matches in the Davis Cup Asia/Oceania Group I tie on Friday.
Ismailov is ranked 406, while Fayzieb was played in place of Denis Istomin, who had pulled out of the second round tie due to a foot injury.
To his credit, Ismailov made life difficult for the Indian despite suffering cramps in his right hamstring.
The Indian sealed the opening set in a jiffy and was leading 4-3 in the second when he saw himself down 0-40. He saved two breakpoints but netted a backhand on the third to allow Ismailov stay alive.
The Uzbek played freely while Ramkumar put himself under pressure to finish the job quickly. The nerves got to Ramkumar and, in utter desperation, he squandered four set points and was eventually broken in the 12th game.
The Uzbek had snatched the momentum but suffered cramps in his right leg in the third set, making the job of the Indian easy. Ramkumar ran away with the third set as Ismailov's restricted movements gave him easy points.