PokerStars and Sky Bet are reviewing their global and UK media planning and buying accounts respectively.
The betting companies, which are owned by Canadian-based The Stars Group, are holding pitch briefings next week at Old Trafford, Manchester United Football Club’s ground. The review also includes the BetEasy brand.
PHD is the incumbent on the PokerStars business and MediaCom Leeds currently holds the Sky Bet and PokerStars UK business.
Intermediary MediaSense is assisting with the pitch process.
The Stars Group acquired Sky Bet in a reported £3.4bn deal in July last year. Earlier that year the company promoted Christopher Coyne to chief marketing officer. The business reported revenue of $2bn for 2018, up from $1.3bn in 2017.
A spokeswoman for The Stars Group said: "As part of its normal course of business, The Stars Group conducts a review every three years of its global agency roster and media planning and buying capabilities. The review spans all businesses and brands, including PokerStars, Sky Betting and Gaming and BetEasy."