Date of birth
The Millers swooped for the highly-rated operator during the close season of 2016/17, paying Falkirk an undisclosed fee for his services.
The former Tranmere Rovers youngster has made his name north of the border after a short spell in England with Workington Town.
In a three-year spell at the Falkirk Stadium, he has played over 100 games for the Bairns before moving back to England to sign for the Millers.
He made a spectacular debut for the Millers by netting a 25 yard wonder-goal in the 2-2 draw with Wolves, one of 42 appearances in his first season at the club.
Vaulks showed his versatility by successfully playing a number of games at right-back.