New Delhi: Sachin Tendulkars name has always been at the top of cricket history. His record for the most runs in Test cricket has stood unchallenged for two decades. But now this monumental achievement is under pressure from a new challenger. This star batsman consistently performing brilliantly is inching closer to a milestone previously held only by Sachin Tendulkar. Joe Root is rapidly rising Englands star batsman Joe Root has emerged as Sachins biggest challenger in Test cricket. He has consistently produced runs over the past few years and with each series he is inching closer to Sachins record. Career statistics reveal the big picture Root has so far scored 13543 runs in 158 Test matches. He has scored 39 centuries and 66 half-centuries at an average of 51.3. Like Sachin he has also scored six double centuries proving his ability to play long innings. How far is the gap to Sachin Tendulkar? Root is currently 2378 runs shy of Sachins record of 15981 runs. Although this gap appears large cricket experts believe that this achievement is not impossible for him given Roots consistency and form. The Ashes will be Roots next big test. Root will have the opportunity to score runs in 10 innings in the Ashes series starting November 21. Even if he doesnt break the record in this series these five Tests will certainly determine how quickly Root can reach Sachins historic record. Story Highlights Sachin Tendulkars record of 15981 runs is now under challenge. Joe Root is rapidly closing in on Sachin in Test cricket. The gap between the two is 2378 runs. The Ashes series could prove decisive for Root.