Official (tennis) - Wikipedia
A working life: The tennis umpire | Work & careers | The Guardian
About the head referee - TENNIS
Marijana Veljovic: Meet the 'super pretty' tennis umpire setting pulses racing at the Australian Open — RT Sport News
Be the Referee: Tennis Spin
About a linesman - TENNIS
Official (tennis) - Wikipedia
Officiating in Tennis | ITF
Tennis' highest-ranking umpire Soeren Friemel banned for 12 months over abuse of power claims
Roles of Officials - Tennis Canada
Who was the line judge hit by a tennis ball struck by Novak Djokovic at the US Open? | The US Sun
A robot referee can really keep its 'eye' on the ball
Who is the Wimbledon final umpire? Meet James Keothavong ahead of Djokovic vs Anderson | Tennis | Sport | Express.co.uk
Gerry Armstrong appointed Championships Referee Designate | Tennis News | Sky Sports
In defaulting Djokovic, US Open referee Soeren Friemel deserves credit
Officiating in Tennis | ITF
Become a USTA Tennis Official | USTA
Tennis - Wikipedia
Tennis referee hi-res stock photography and images - Alamy
How To Get Started In A Tennis Official Role | LTA
Top Official Returns to the U.S. Open After Misconduct Suspension - The New York Times
The hardest part about being a tennis line umpire
Who is US Open tennis umpire Marijana Veljovic? | The US Sun
Tennis referee hi-res stock photography and images - Alamy
Djokovic out of US Open after hitting line judge with ball | The Seattle Times
Carlos Ramos, Umpire Known for Rigidity, Lands in U.S. Open Firestorm - The New York Times
