Lancashire batsman Jordan Clark has hit six sixes in one over in a second XI game against Yorkshire at Scarborough, off left-arm spinner Gurham Randhawa.
Clark, 22, is the fifth player to achieve the feat in professional cricket and the first Englishman.
West Indies legend Sir Garfield Sobers was the first to hit six sixes in an over for Nottinghamshire in 1968.
1968 - Sir Garfield Sobers
(for Nottinghamshire v Glamorgan)*
1984 - Ravi Shastri (Bombay v Baroda)*
2007 - Herschelle Gibbs
(South Africa v Netherlands)
2007 - Yuvraj Singh (India v England)
2013 - Jordan Clark
(Lancashire 2nd XI v Yorkshire 2nd XI)
Sobers and Shastri's accomplishments both came in domestic first-class cricket, the latter for Bombay.
South Africa opener Gibbs's feat at the 2007 World Cup was the first time it had been achieved in international cricket, while India all-rounder Yuvraj joined the select group at the inaugural ICC World Twenty20 later that year.
Clark joined Lancashire's academy in 2008 and after making his one-day debut for the first team in 2010, he was part of the Second XI Trophy-winning side last season.
The Whitehaven-born youngster is yet to make his County Championship debut for the Red Rose county, but has featured in five one-day and nine Twenty20 matches.