Iyer's teammate pacer Bhuvneshwar Kumar jumped three spots to 17th on the bowler rankings, while former captain Virat Kohli, who was rested for the Sri Lanka T20Is, fell out of the top 10 - he dropped five places to 15th.
Pacer Avesh Khan bagged four wickets as India scored an emphatic 82-run victory over Bangladesh in the Under-19 Tri-series One-day tournament opener, at the Jadavpur University campus ground in Salt Lake, Kolkata, on Friday.
Trying to pick up pieces after a demoralising defeat, India's decorated top-order will be desperate to change the narrative and give a better account of itself in the do-or-die second ODI against Bangladesh.
Images from Day 1 of the first Test between Bangladesh and India, at Chattogram, on Wednesday.
KL Rahul's tactical acumen will be tested along with his batting prowess when a depleted Indian team clashes with a tricky Bangladesh
In recent years, India's batters have struggled against spin.
Images from the Asia Cup T20 match between Sri Lanka and Bangladesh in Dubai on Thursday.
Rishabh Pant and Shreyas Iyer combined in a rollicking 159-run partnership to help India wrest back control of the second Test against Bangladesh.
With 762 points, Kohli is behind England's David Malan
India, Pakistan, Sri Lanka, Afghanistan and Bangladesh can beat each other on their day
Debutant Aiden Markram suffered a horror run out just three runs shy of a century as South Africa amassed 298 for one on the first day of the first Test against Bangladesh on Thursday.
Sunil Joshi has applied for the national team bowling coach's job
It was Shami and his pace colleagues who inflicted telling blows that Bangladesh could never recover from.
Pakistan will be eager to raise their game.
Ishant Sharma and his pace colleagues wreaked havoc with the pink ball to put India in charge of their maiden day-night Test against Bangladesh at the Eden Gardens in Kolkata.
Bangladesh captain Mashrafe Mortaza says his injury-struck side will have to improve considerably in all departments to challenge India in the Asia Cup final, in Dubai, on Friday.
'Under lights, with the late swing, it is challenging for batsmen'
While India's rivalry with Pakistan is historic, the one against Bangladesh has been a bitter one post the controversial 2015 World Cup quarter-final at Melbourne.
India's pace trio took less than three hours to rout the tourists after Mominul Haque's decision to bat backfired.
With India needing 34 runs off the last two overs, Karthik hammered 29 not out off just eight deliveries, his third six sealing India's third, and the most hard-earned, victory over Bangladesh in the tournament.
India are the overwhelming favourites to win the tournament for a record seventh time while Bangladesh will be hoping to be third-time lucky in a summit clash.
Rohit Sharma carried his bat, scoring 83 not out, while putting on two good partnerships. He first stitched a 61-run partnership with Dhawan at the top of the order and then joined hands with Dhoni to see India through.
Rohit Sharma-led India's main aim would be to settle their middle-order combination and also find a perfect batting position for Mahendra Singh Dhoni.
Bangladesh edged past Sri Lanka by two wickets in a thrilling finish to set up a summit clash against India in T20 tri-series in Colombo, on Friday.
A severely hamstrung Kedar Jadhav held his nerve in the closing stages, while the lower order made vital contributions with the bat as India edged past Bangladesh by three wickets to win their seventh Asia Cup title in a pulsating last-ball finish, in Dubai on Friday.
The 2019 edition in England & Wales might be only 15 games old but set a fascinating pattern right from the very first ball when South Africa opened up with the leg spin of Imran Tahir.
Karthik's gem of a cameo got him 29 off 8 balls with two boundaries and three sixes -- the last of them which will be forever be etched in the memory.
Gilchrist made the comments after the IPL governing council proposed to have a dedicated "no-ball" umpire to reduce the number of howlers in the lucrative league.
West Indies rode on its fast-bowling arsenal to win the ICC Under-19 Cricket World Cup for the first time with a tense five-wicket victory over three-time winner India in the final in Mirpur on Sunday.