The defender made his debut in the Premier League against Aston Villa on August 14, and has since played in every league game so far this season.
“It was a special moment to get that ball,” said Troost-Ekong, 28. “There've been so many tests and setbacks and difficult times to get there, it was a dream that finally got achieved.
“After the longest way around and after eight years of working in different countries to finally get back to where I want to be and let the real work start, it’s been really good.
“Watford’s always been a special club for my family and I’ve been in the stands watching as a fan. This last year has been so enjoyable, and it’s even more special that it was exactly a year after I signed that I received this Premier League Debut Ball.”
Goalkeeper Bachmann debuted in the Premier League on the same day, in an entertaining 3-2 win over Villa.
The 27-year-old came through at Stoke City, moving from his native Austria in 2011. He joined Watford in 2017 from the Potters and made his league debut earlier this year.