278/4 by Czech Republic (vs Turkey at Ilfov County on 30th August 2019)
It was the one-sided T20 game ever till the date, where the Czech Republic created many T20I records. This time the Czech side won the toss and elected to bat first.
While the openers Honey Gori (32 runs off 21 balls) and Sumit Pokhriyal (79 runs off 52 balls) started superbly with the 70 runs partnership, the no.5-positioned batsman Sudesh Wickramasekara hit the joint-fastest T20I century (35-ball century) and remained not out on 104 runs off just 36 balls (8 fours and ten sixes).
After the Czech Republic scored 278/4 (20 overs) in the first innings, they bundled out Turkey for just 21 runs – the lowest total in T20 cricket history. While the Czech won that match by 257 runs, it was also the record margin of victory (runs) in T20 cricket history.