Kamindu Mendis has been in scintillating form since his Test debut in July 2022.
The Sri Lankan batter has breached the 50-run mark in his first seven Tests.
The feat was earlier achieved only by Pakistan’s Saud Shakeel.
Mendis equalled the monumental record with a century against New Zealand.
Four players, including Sunil Gavaskar, have scored half-centuries in their first six Tests.
Saeed Ahmed, Basil Butcher and Bert Sutcliffe have also matched this feat.
Mendis scored a gritty 61 in his debut Test against Australia in Galle.
The southpaw has already struck four centuries in the longest format.
He is the fastest Sri Lankan batter to reach 4 centuries in Tests.
Mendis achieved it in 11 innings and broke Michael Vandort's record.