Yousef Anwar, 36, and Mohammed Ijaz, 34, admitted Monday conspiring to offer bribes to professional cricketers, before a scheduled trial in Manchester, northwest England.
The pair pleaded guilty to conspiring together between November 2016 and February 2017 to offer financial advantages to players in the Pakistan Super League, with the intention of inducing them to perform improperly by failing to play competitively in good faith.
They also admitted the same charge in relation to players taking part in the Bangladesh Premier League between November 2016 and December 2016.
Prosecutors will open their case against him on Tuesday at Manchester Crown Court.
British nationals Anwar, from Slough, west of London, and Ijaz, of Sheffield in northern England, were granted bail ahead of sentencing, expected to take place early next year.
Spot-fixing involves rigging a specific aspect of a game on which bookmakers have offered odds, unlike match-fixing, where the whole result is fixed.
Jamshed has played Test, one-day and Twenty20 international cricket for Pakistan.