Leicester drew 2-2 with Spurs at the weekend, and both Gray and Chilwell were hugely impressive - despite their inexperience.
Gray was making his debut for the Foxes, while Chilwell was making just his second start, and Ranieri was impressed with the young pair.
CR: “Ben Chilwell was fantastic [on Sunday]. If you think, our left side was 18 and 19 years old. Gray and Chilwell were fantastic.” #TotLei— Leicester City (@LCFC) January 11, 2016
Both Gray and Chilwell had arguably the toughest tests of their career at White Hart Lane, but they passed with flying colours.
Gray has only recently arrived at the King Power Stadium from Birmingham City, but he seems to have taken no time to settle in.
The 19-year-old managed to get an assist in the tie, and he almost scored when taking an audacious attempt in the second half.
Chilwell, meanwhile, looked solid in his role at left-back, and further enhanced his reputation as one of the most exciting youngster at the King Power Stadium.