Kane WIlliamson is No.3 in the New Zealand batting order, but potentially No.1 in the cricketing world after the Bangladesh tour.
His unbeaten 200 in the first test has him on the cusp of becoming the format's best batsman again.
The New Zealand skipper has lifted his ranking points to 915, just seven shy of India's Virat Kohli.
Williamson's rating points are the highest by any New Zealander in Test cricket with Richard Hadlee the only other player from his country to cross the 900-point mark with a best of 909 points in bowling.
Williamson could surpass Kohli with strong performances in the remaining two tests.