Just one over for Root in the spell as Tom Hartley comes back into the attack.
Iyer clips the first ball off his pads for a single and Jaiswal hits the third ball down to long-on for another run.
Anderson starts his new over with a short ball to Iyer, who pulls it behind square for a single as the fielder at fine leg does well to keep the ball inside the ropes.
Jaiswal flicks the next to deep square leg for one and Iyer plays another pull shot to get one more.
Mumbai duo of Jaiswal and Iyer have had some misunderstandings while running between the wickets.
This time Jaiswal comes rushing down before he is sent back halfway down. He nearly slips but manages to get back to his crease and the throw is a wild one.
Iyer watchfully plays out a maiden over from Hartley, who keeps it full and on the line of the stumps.
Anderson starts his new over with the slower off-cutter to beat Jaiswal. The next ball is quicker at 130kmph as Jaiswal pushes at it and is beaten again on the outside edge with Anderson getting some late away movement.
Jaiswal nudges Anderson on the leg side for a single.
Anderson bowling short to Iyer with a packed leg side field. The right-hander makes room to hit it over the off-side but bottom edges the slower ball.
He again makes room and initially attempts to upper cut but bails out of the shot.
Root is back into the attack. Jaiswal drives the first ball down to long-off for a single and Iyer pulls the short ball from Root for a four.
Singles from the last four balls as Root concedes nine runs from his eighth over.