The Blues captain was replaced after just 26 minutes against Sunderland, and reports have suggested some punters may have won big after the incident
The Football Association has asked betting companies to provide any relevant information relating to John Terry's substitution after 26 minutes of his farewell Chelsea appearance against Sunderland on Sunday.
Hazard can become a Chelsea icon
The 36-year-old captain was given a guard of honour by his fellow players as he departed in a pre-planned substitution - timed for the minute matching the shirt number he has worn across 717 appearances for the newly crowned Premier League champions.