Root has already surpassed former England skipper Graham Gooch's run tally in Test cricket who had scored 8900 runs.
Joe Root remained unbeaten on 180 as Indian bowlers prevented England from taking a massive first-innings lead at the end of Day 3 in the second Test.
England skipper Joe Root notched up his 22nd ton on Day 3 of the second Test against India at Lord's on Saturday (August 14).
Joe Root hit an unbeaten 48 to help maintain England's fightback on Day two of the second Test against India at Lord's.
Rahul, who last made a Test hundred in September 2018 against England, ended the long wait as he scored his sixth century in the longest format.
The ECB is "very confident" this winter's Ashes series will go ahead as planned despite ongoing negotiations over Covid travel restrictions.
England and India will lock horns at Lord's with the aim of nudging ahead in the five-match Test series.
Both India and England were docked two WTC points for maintaining a slow over rate during the first Test at Nottingham.
After the fourth day, Root said that a few early wickets on the final day could turn the tide in favor of the home side.
The match was evenly poised heading into the final day of the Test in Trent Bridge but the game was called off after persistent rains kept delaying the start of play.