Jake Livermore has thanked Hull's fans for their support after the midfielder made his return from a drug suspension.
Livermore, 25, played 69 minutes of the Tigers' League Cup win over Swansea on Tuesday, his first appearance since testing positive for cocaine in May.
He avoided a Football Association ban because of the "unique" circumstances of his offence, which followed the death of his newborn son, Jake Junior.
"Can't thank the fans enough for the overwhelming support," he posted.
"Also my team-mates, thank you for your support throughout.
"These words won't explain the feeling but was great to be back in the shirt and play in front of my family.
"By that I mean each and every fan and friend who supported me through this as well."
England international Livermore, whose son died on 19 May, 2014, was required to give a urine sample after the Premier League match against Crystal Palace on 25 April this year.
He was notified of the failed test on 13 May and had not played for Hull since. He could have received a two-year ban.