London, UK, 21 June 2017 | AAP

Jordan Thompson has claimed the biggest scalp of his young career sending world No.1 Andy Murray packing in the first round at Queen’s Club.

The luckiest of lucky losers Thompson took Aljaz Bedene’s place in the main draw then beat Murray 7-6(4) 6-2 in a huge boilover at the traditional Wimbledon lead-up.

> READ MORE: Lucky loser Thompson to face Murray

As Murray struggled to get his shots to travel through the court and delivered a performance riddled with unforced errors world No.90 Thompson took out the match with an ace on his first match point.

The 23-year-old from Sydney admitted he feared the worst when he heard he was playing the reigning champion on his favourite surface but showed no nerves as he swept aside Murray in the second set.

“Andy is the world No.1 and I have looked up to him so to be playing him at Queen’s is huge and it is definitely the biggest win of my career,” Thompson told the BBC.

“I just took each point at a time and I didn’t expect to win here in straight sets and I just wanted to enjoy myself and stay calm.

“I think I did that pretty well.”

Thompson lost in qualifying on Sunday and was sitting around watching the tennis in the London sunshine when he got the call that he had made the draw at lunchtime on Tuesday after Bedene picked up a wrist injury.

“I was hoping to get a game, I was coming in and signing in and hoping for the best,” he said.

“After today’s performance anything can happen now, but I am not counting on it.”