England pacers Gus Atkinson and Josh Tongue have also attained their career-best positions.
If Siraj was the warrior who swung the sword at the decisive moments, Krishna was the charioteer who steadied the charge.
He finished the five-match series in England with a chart-topping 23 wickets, the highest for any bowler.
Mohammed Siraj struck again for India before England's Harry Brook counter-attacked in style as a dramatic fifth and deciding Test at the Oval remained in the balance on Sunday.
